Certainly the handwriting samples lean in the direction of forgery, but it's not even entirely relevant, since it's very clear that the Archbishop was under some form of duress and/or control in those later months. You can almost see a glazed look in his eyes, where for all we know he was even being drugged. Commie agents who despised him would not be averse to those types of tactics. Cardinal Mindszenty signed false confessions after torture, thought he was able to sneak in a little mark that he had told people beforehand would indicate that the signatures had been obtained under duress.
And it's doubly irrelevant that even IF the Archbishop had succuмbed to lesser degrees of pressure, since that would have had absolutely no bearing upon whether or not he could validly consecrate bishops back in the 1981 timeframe. There was zero evidence ever presented from that era to suggest anything other than that he remained remarkably sharp and lucid, and for at least a year afterwards from all the reports of his time with Bishop Vezelis. Not the tiniest hint of senility, forgetfullness, memory issues, etc. Zero.
But Scuмmage has no problems throwing handfuls of excrement at the wall, imitating the tactics of Bishop Kelly, hoping that he could stir up enough FUD about the Archbishop to have people question the validity of the Orders he conferred. +Thuc consecrated +Guerard des Lauriers and +Carmona / +Zamora in 1981, then ended up with +Vezelis, and showed no signes of any mental impairement, only to be kidnapped in 1984 and then die by the end of the year, despite having been an pretty decent health prior to that. So nothing that happened in 1984 has any bearing on his mental state and ability to validly consecrate in 1981.