I watched clips of him running the 40 without his shirt on the NFL Network.... real nasty. That dude clearly has not been working out long enough. That said, I've heard conflicting reports about his stock after his Pro Day. Some said the measurement drills aren't as important as the performance drills, in which he did pretty well. Others said it all amounted to a mediocre performance that stopped his slide, but didn't do that much to improve his stock.
