Bryz made some blunders this season, but his sv% was decent by the end of the season, he showed the capacity to be a monster in the net this past March. Flyers have always been a team focused heavily on offense and lighter on defense. That's why it's a "goalie graveyard."
They need to develop a stronger defense (let's be honest, Pronger was hugely missed, but one person is not going to shift their D into a powerhouse, or even mediocre territory). That's where all their effort should go. Put someone who plays the same as Bryz into a team with a D like Rangers or Devils and you'll see his sv% climb to the .940 territory and be hailed as a god among gods.
They also really exposed their weakness to teams that play heavy on defense this year - Bruins, Rangers, Devils. They excelled despite their glaring weakness this year - but if the knowledge of being winless against the Rangers since early 2011 did not expose them, the series vs. the Devils exposed them - teams will know, easily, how to defeat them next season. They have to adapt, which means either (a) they will, or (b) Laviolette might expose himself as a one-trick pony, flounder next year, and be with another team in mid-2013.