What can you say?
Lemieux didn't play. It wouldn't have mattered if he did.
Crosby did play - but he didn't really look to be at top speed.
Thibault was in goal. He wasn't horrible, but he wasn't good either.
The first two goals for the Lightning were on redirections. To some extent, that is pretty lucky, but it's also probably some poor defense.
Overall, the Pens defensive effort wasn't very good. They played well in the first, but were outshot 18-3 in the second period. Consistency, again, was the key (or the lack of it).
Craig Patrick was interviewed between periods and was asked about Marc-Andre Fleury. He reiterated what was in the article I linked to earlier today.
Changes are coming - they have to be. This team simply isn't responding right now, and it seems to be mainly a lack of effort and a lack of consistency.