Again, you're missing the point, since logic is not SeanJohnson's strength.  I'm saying that it's not possible that God would allow anyone who perseveres in justification to die without the Sacrament.  But I personally don't believe that justification is possible before Baptism (where I'm not in complete agreement with Father Feeney.)

I emphasized a few things for convenience.  Mainly, that Trent is describing the acquisition of supernatural faith on the part of the catechumen.

CHAPTER VI.
The manner of Preparation.

Now they (adults) are disposed unto the said justice, when, excited and assisted by divine grace, conceiving faith by hearing, they are freely moved towards God, believing those things to be true which God has revealed and promised,-and this especially, that God justifies the impious by His grace, through the redemption that is in Christ Jesus; and when, understanding themselves to be sinners, they, by turning themselves, from the fear of divine justice whereby they are profitably agitated, to consider the mercy of God, are raised unto hope, confiding that God will be propitious to them for Christ’s sake; and they begin to love Him as the fountain of all justice; and are therefore moved against sins by a certain hatred and detestation, to wit, by that penitence which must be performed before baptism: lastly, when they purpose to receive baptism, [Page 34] to begin a new life, and to keep the commandments of God. Concerning this disposition it is written; He that cometh to God, must believe that he is, and is a rewarder to them that seek him; and, Be of good faith, son, thy sins are forgiven thee; and, The fear of the Lord driveth out sin; and, Do penance, and be baptized every one of you in the name of Jesus Christ, for the remission of your sins, and you shall receive the gift of the Holy Ghost; and, Going, therefore, teach ye all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost; finally, Prepare your hearts unto the Lord.

CHAPTER VII.
What the justification of the impious is, and what are the causes thereof.
 
This disposition, or preparation, is followed by Justification itself, which is not remission of sins merely, but also the sanctification and renewal of the inward man, through the voluntary reception of the grace, and of the gifts, whereby man of unjust becomes just, and of an enemy a friend, that so he may be an heir according to hope of life everlasting.

In other words, God damns the just.

Got it.

Nobody is just, if he hasn't received the sacrament of baptism. Before baptism, men are "impious" and "unjust". Read cuм hoc tempore!

Be kind; do not seek the malicious satisfaction of having discovered an additional enemy to the Church. The bitterness of some men's writing is very exasperating, and irritation will sometimes bring down a tottering structure which a little kindness might have saved. What would have become of Abelard without the gentleness of Peter the Venerable? Charity has good, not evil, for its object; it would rather win hearts by gentleness than humiliate them by an assumption of superiority. Be courteous; in the fight against error treat your adversary with deference. And, above all, be scrupulously truthful. To all, friends and foes alike, give that serious attention which does not misrepresent any opinion, does not distort any statement, does not mutilate any quotation.

We need not fear to serve the cause of Christ less efficiently by putting on His spirit. In our own day especially, when men love to make a show of sincerity, and when so many honest but mistaken souls are yearning for the truth, let us count Christian loyalty as one of the most powerful influences to induce men to accept the gift of faith. Defective arguments weaken sound propositions; false statements embitter disputes, perpetuate controversies, multiply misunderstandings, and give an opening for crushing rejoinders. An arrogant and uncompromising tone in an author makes men reluctant to listen to his arguments, and anxious to see him proved to be wrong. We do not establish a truth by showing that there is little evidence to support it; we cannot eradicate error by making it look like truth; and we cannot hope to persuade a reader if we begin by exciting his antipathy. There is much sound sense as well as humour in the words of St. Augustine: "Wolves sometimes disguise themselves in sheep's clothing, but that is no reason why sheep should change their skins.” Those victories alone give glory to Christ which are won by the weapons of Christ, for these are the weapons of justice.5 To wish for no other victory, we need great self-control, perfect confidence in the ultimate triumph of truth, zeal untainted by unworthy motives; and this self-control, this confidence, this zeal, enhance the private virtue of tolerance, and invite the admiration of all men. ("On Tolerance", 1913)

Is it theologically possible that any of those who die justified are damned?

If you answer yes, can you provide a single citation to back it?

Then the old Catholic Encyclopedia is heretical in its description of the “limbus patrum” when it describes it as:

In theological usage the name is applied to (a) the temporary place or state of the souls of the just who, although purified from sin, were excluded from the beatific vision until Christ's triumphant ascension into Heaven (the "limbus patrum")

How were these souls justified if there was no baptism?

Are you so intransigent and obstinate that you would judge the CE heretical, rather than backing away from your erroneous opinion?

Is it theologically possible that any who die justified but not baptized go to heaven?  (p.s. some catechumens were baptized, though they were referred to catechumens still).
If yes, provide a citiation.
I'll wager there are no theological opinions for either case because it's a question the Church has yet to answer.