As far as the wind goes, they showed in the first episode that the dome let enough water through to get Joe's hand wet.  It stands to reason that setting off a MOAB would let a bit of a breeze through it.  Very much agree with the complaints about Angie this episode though.

Did Sam just run off and leave that knife at the end?

You'd never hear Mitchell Hurwitz publicly berating late AD fans.  smh

I thought they were those giant centipedes at first, but I'm pretty sure those were supposed to be millipedes.  And I thought it was a decent episode, with A.J.'s freakout being the best part for me too.

I loved seeing Martin Starr; his first line got the biggest laugh for me. "It seems to be working now" as he turned the snow globe back over.