I disagree that playing the starting quarterback during "garbage time" (after at least three quarters during which they and the rest of the team clearly did not play well enough to even keep the game within reach) will contribute to their continuing development. And god forbid the starting quarterback gets injured, suspended again, etc., the backup should have at least gotten some meaningful game minutes (practice doesn't count) to be more prepared to come in and play well. This had been a recurring problem under Schiano, and now the same with Flood.
FYI, I was never and will never be a head coach, but am merely offering a logical opinion on the matter. I also believe that Laviano played more than well enough this past Saturday night to keep his starting role, but doesn't mean he earned a season-long benefit of the doubt.