That's what I had done, kept throwing a chair at the door until the other chair started showing.
Than I started throwing the chair on the other side (wouldn't actually be thrown, but would move around)
I was able to open the door enough to finally open it. I than went into the vents and discovered that 
Wish I had figured that one out myself instead of cheating =[
			
Please 
-REP me.
Honestly, please do.  I want to see how low I can go!!
Ignore that error message too.  Just ignore it and keep going to give me -rep.