^ When you consider that there is a point in TUC where Vultane appears to be in two different places at once (thank you, Memory Alpha) and that the shot of the Excelsior crew is a very minor footnote of TUC's ending, any discontinuity that may or may not exist with regards to Vultane IS ultimately inconsequential.
Upto a point, the writers choose to re-use Valatine it was a conscious decison, no doubt to use a character with which some of the audiance might be familiar with. It's insulting to the audiance to think that they wouldn't pick up on the fact that he was seemingly killed yet alive and well at the end of TUC. It's sloppy writting, isn't one of the rules of writting be consistant with events, it clearly wasn't consistant with TUC.
And correct me if I'm wrong but doesn't "Flashback" imply that the events seen in the episode that took place days after Praxis exploded rather than weeks as implied in TUC?
Yet another inconsistancy (If I'm right)?