http://i.imgur.com/mtE4o.jpg
http://i.imgur.com/xm8Kl.jpg
I was in the middle of Devilish Drudgery: Wired for Synergy, and I got stuck. There is a solid row of blocks on my left. There is no way to approach the Devilites from any angle, and they have to be killed to continue past the gate. I'm not really sure how this happened.
I've seen that happen once or twice. I think it has to do with how the ghost blocks spawn when you step on the party button. The blocks down the left side are supposed to disappear along with the rest, but ghost blocks can be slightly glitchy sometimes.
When this happens, file an F2 bug report, then file an in-game support request to summon a GM to warp you past the gate.
I notice your character icon is also messed up in those screenshots. That's probably not related to the level issue, though.
Did you do an F2 bug report?