I believe that he could play either DE or OLB in the NFL.
Found this same opinion a few places, here's one:
This is from FFtoolbox.com:
LaMarr Woodley Scouting Report
Position:DESchool & Year/Status:Michigan - Senior
Height & Weight:6'2 - 270 lbs.
Drafted 2.14 by PIT
2007 NFL Draft Prospect - Scouting Report
LaMarr Woodley possesses a great combination of quickness and strength, with the
versatility to play defensive end or outside linebacker. He is solid at 270 lbs. and can lay the "big hit" to the ball carrier, yet displays enough speed to run down opposing quarterbacks. Although he doesn't have blazing speed, his closing speed is deceptive in pursuit of the ball. Woodley is an impact player on the field as a pass rusher, recording 12 sacks and 15.5 tackles for a loss his as a senior. He shows solid hand technique at the point of attack to shed blockers and locate the ball carrier.
Woodley is clearly a "tweener" and will most likely find himself playing linebacker at the next level. His best fit in the NFL would be a 3-4 defense as an outside linebacker an occasionally line up at defensive end. Woodley has all the intangibles to excel in a 3-4 scheme as a pass rusher and get the job done against the run.
We'll see. Maybe he's too small for DL and too slow for LB, but we're in the 5th round.
He's the same gamble everyone else is at this point. I hope he's productive. If not, oh well...