I think I'm going to be looking for a pass-oriented offensive coordinator in the offseason. Still trying to decide if giving up 20 points of skill to get one now would pay off...
I don't think it would be, the coordinators drive your development but I don't think that's the issue. The actual game play is driven from the current values of each attribute (adjusted for any injuries), period.
Some thoughts (I don't know your game plan and haven't spent any time looking at your games, so you may already have thought of these):
* Reduce deep passes, increase your short passes - deeper passes are by nature less accurate and more prone to incompletes or INT's.
* Look at the bad passes and see if your QB is under pressure - that will reduce his accuracy as well. It may be a pass blocking issue that's causing the problems.
* Look at the bad passes in the game log and look at your familiarity with both plays.
* Make sure your game plan is at least moderately balanced, if you throw too much your rate of success will decline.
Those are some ideas off the top of my head...