Without the advantage of having the "All-22" game film during the preseason, it's difficult to see what Michael Vick was seeing down the field last Saturday in Jacksonville, and whether or not receivers were open.
While that is certainly a major determining factor on how long a QB holds onto the ball, the bottom line is that Michael Vick held onto the ball for an eternity against the Jaguars. In fact, he held onto the ball longer in Jacksonville than he had in any game last season.
During one of Chip Kelly's first interviews after he was hired by the team, he was asked about quarterbacks holding onto the ball to long. Kelly's answer, via Tim McManus of Philly Mag:
“That depends on the system that you run. Some systems don’t ask you to get the ball out quick. Do I think he can get the ball out quick? I think he’s got an unbelievable release. It’s up and out and it’s quick,” said Kelly. “I don’t know what he was asked to do in the past but that’s our job as coaches to put him in a situation where he can get the ball out quickly because we do have some playmakers on the offensive side of the ball who are going to flourish when we get the ball in their hands. That’s on us as coaches — a lot of times that’s not on the quarterbacks.”