It is unfortunate, but there is no question this priest violated confessional seal.
if you had all the data, you would agree.
I suggest you pray for this priest rather than wasting your time attempting to extrapolate, guess, draw conclusions and make recommendations.
Neither you nor I have "all the data." We both have a hearsay report.
As to prayer, whenever we have been wronged by anyone --or perceive we have been wronged by someone, or assume we have been wronged -- the appropriate action is for the supposedly wronged person (you, in this case, not I) to do reparation for the assumed guilty party. This is not something coming from me, but what my trad priest recently told me, and I had forgotten about that with regard to priests especially, although I learned it long ago. (I had told him something that a priest once did long ago, directly to me, in my presence -- not a hearsay accusation when the priest could not defend himself.) My current priest correctly enjoined me to do reparation for that other priest because I was the wronged party, and there would be (thus) graces attached to my prayers of reparation more than those offered by strangers.
I did, however, pray for your priest at Mass. I'm sure my prayers are not as efficacious as yours, and I'm glad you are also praying for him.