For me, the big turning point in JD's tenure (and, consequently, the downfall of the Zips' football program leading up to today's cumulative low point) was the K e n t game following the 2005 MAC championship.
We were coming off the Motor City Bowl appearance & I was fully expecting to level K e n t. Unfortunately, our D simply couldn't stop Julian Edelman in any way, shape or form. He absolutely shredded us both through the air and on the ground that day.
I don't think we ever really recovered from that. Everything, I mean everything, seemed to be downhill from that point on.