He's probably just not very good. I'm glad they cut him. Belichick has an extremely good record of know when to let people go. The list of guys he's cut that have gone on to prove him wrong is pretty much non-existent.
The only gripe to have here is what appears to be a talent evaluation problem, either that or a long frickin' drought.
Hey, maybe that's why Belichick always works to get so many picks. He knows the scouts suck, so he figures if he gets enough picks a few will pan out on pure luck.
Seriously, with all the 2nd rounders we've had we're due to get a stud pretty soon just based on statistics.
(To be fair, Gronkowski has been a 2nd round steal. He'd be a top 10, maybe top 5, pick in a 2010 redraft. You can make a good argument that he is the best offensive player drafted in 2010)