Day before yesterday they said Ponder was brutal as well. He not only short-hopped receivers, he overthrew wide open guys by a lot, etc. It seems he might be totally falling apart with the pressure of Cassel looking over his shoulder. Good thing AP wants to run for 2,500 this year, and break Emmit Smith's all-time record by the end of 2017.
Ponder is, and always will be an inferior QB, but bringing in a guy like Cassel is the worst possible thing they could have done. Not only is he no better than Ponder, but they've left the guy they took 7th overall in the draft looking over his shoulder. Letting Ponder build on his limited "successes" of last year for at least another season, with a better group of WRs would have been the smartest move. He has very little in his resumé to build any sort of confidence upon. Cassel didn't go to Minnesota because he thought he was going to be a backup, he knew he'd have a good chance at the starting job.