But there's so many possible blowy things in the lab car!!

He's got a bowling pin for a weapon (right now), itching in his hand as he's been stopped, needing to do anything, anything that's not the same old 'sit around and wait' everyone's been doing for far too long.

"There's gotta be somethin' we can do to get out there. We have to try anything!" Continuously bash things up to no apparent change? Yes, even that. "I'm not sitting here waiting an entire week while we leave people behind! This is stupid!"

Is he venting just because he's been given a chance? Absolutely.