In Half Life 2 just after obtaining the rocket launcher and taking down the gunship, I am stuck in a room...?

...with one of those Vortigaunt(spelling?) who is standing in front of the door. It's a little house to the left if you're facing the gate, with the barn that Col. Cubbage is in to the right. I've tried stacking bed frames to no avail and the windows are too thin for me to jump through. I am pretty sure I've suffered this glitch before. Any ideas (besides restarting the checkpoint and NOT going in that room)?