Rules question about PTW and having no realiable chance to get any VP

Ok, so yesterday we had a situation in a tournament that I'd like official ruling because it is having repercussions in our playgroup

Methuselah A has Dragonbound and Torpid blood in play and one ready vampire

Methuselah B, his prey, has 2 pool, 3 vampires in torpor and 1 ready vampire that is younger that all of his torporized vampires, and has 2 blood in him. The time left on the table is approximately 5 minutes.

It's methuselah B minion phase. If he gets to his discard phase he is taking 3 pool damage from dragonbound and getting ousted. So he decides to rush his predator only minion with his remaining minion.

At this time Methuselah A asked the time to be paused and the judge to be called. He argued that Methuselah B's action was unsportsmanlike conduct and that he was only doing it out of spite for having all his minions torporized by Methuselah A.

The judge took Methuselah B aside and asked what was his rationality for the action. He said that he didn't see a way of going forward (he had 1 minion as stated before and his prey had plenty of pool) and that doing nothing would result in his death since that he would take 3 pool damage from dragonbound. He couldn't rescue any of his vampires from torpor because of torpid blood and even if he diablerized one of his vampires he would still take 2 pool damage and still die, so he thought that by entering combat and using some cards MAYBE the table would time out and he would get 0.5 VP.

The judge reminded him in private that stalling the game on purpose was indeed unsportsmanslike conduct, but if he played the combat in a reasonable and timely fashion he could do the action.

Then the players got back to the table, the judge explained that the conduct wasn't forbidden and the game resumed. Methuselah B indeed rushed Methuselah A only minion, torporized him and the table didn't end up in time at that moment. He passed his minion and influence phase without any more delays and indeed was ousted in his discard phase.

So here is my doubt: was methuselah B conduct unsportsmanlike? It is my understanding that once it is clear that you can't achieve any more VPs, even 0.5 from time, you can perform any action you want, you are not recquired by PTW rules to roll over and die or to target your last action at your prey if this action has no chance of achiving you one VP. I also thought that Methuselah B rationality that entering combat to spend some time in order to get time was sound, since combat is a slow part of the game and it's not like he was playing deliberatley slow. But methuselah A is really upset about this outcome and is puting the whole tournment suitability in question.