Over-Officious has got it right.
I've watched Jeff Garcia for years. He is a successful product of the CFL. With its longer/wider field, 3 downs (no spiking up there), only one timeout per half, 12 men a side, and 20-second play clock this requires a quick, scrambling, "intelligent" type of quarterback (remember Doug Flutie?). Big, slow, sit-in-the pocket quarterbacks get killed up there (e.g. a guy like Jamarcus Russell). Same goes for straight-ahead bull-rushing running backs (Sproles would do great). Of course, Garcia's only a short-term project, but he'll win you some games. If this is what you need, then Garcia is your man. He is tough as nails (Gruden called him "barbed wire").
And yes, Garcia didn't cost the Bucs the 2008 last four-game slide (he played in 3 of them). The Bucs collapsed because their Defense collapsed. The Bucs relied heavily on their Defense to win games. I watched all those games and it was obvious that the Defense had simply given up (because of Monty Kiffin's imminent departure?), forcing the Offense to carry the load and make a lot of risky plays. By this time Garcia only had one WR of any account (Bryant) and no running backs of any real consistency, so the dink-and-dunk scrambling quarterbacking was their only choice.
And, Oh yeah - what has Owens done for you lately anyway? I don't think he's in any position to start running off at the mouth.
My guess is that Garcia will wind up looking for a coaching job somewhere (Offense or Quarterback).