That may prove to be true, but don't you think it's a bit early to make that call?
Sounds like he hit a wall with his stuff. Despite 6 hits through 3, as I posted 3 of those were defensive blunders that were no fault of Olsen's, so he was adequate through 3 innings. I agree with the thought that he needs a rehab assignment to build some strength and see if he can get it back. He's clearly not ready.
We should leave it to our team's coaching and medical staff, but you have to wonder if they're just banging their head against a wall with this guy. Look at his history:
-Pitches fairly well in 2006. One of the better rookies in the NL.
-Has dead-arm the next year and pitches terrible
-Pitches reasonably well in 2008. Not quite a return to form as his velocity is down and his numbers aren't as good as '06.
-Has even worse dead-arm in 2009 with the Nats, gets shelled and needs to be quickly removed from the rotation.
If the pattern continues, he's going to be slightly below average at best. If the recent trajectory continues, he'll be awful. If he miraculously gets fully healed up and lives up to the promise of his rookie season, he could be above average, but what are the odds of that?