In fairness to the program, cases like Tracy are fraught with 20-20 hindsight.
He was recruited as a WR and to serve as a bit of a gadget player and returner. The talent level around him wasn't the best, for sure, but he failed to take advantage of the opportunities when he got them - his hands were very suspect, as was his route running and return ability. The staff fed him plenty of reps and gave him every chance, but he just couldn't get any traction.
He got a fresh start at Purdue, but one has to wonder if his subsequent success was due to better coaching and utilization, or did he mature and work harder on his game? Probably a little of both, but either way I'm happy for him. He could have given up but he worked to get better, and it's paying off.