Big Hand error

[Monkwrestler]

I was doing some stacking and was withdrawing a z shelf and all of a sudden it just froze as in I could not re open the hand and my furni didn't show up for like 21 seconds which by which I had taken the screenie but yeh idk w/e happened oh and I forgot to say that I wasn't lagging as my charater was moving around perfectly fine.
http://img187.imageshack.us/img187/2294/dsfsfdsfcp5.png