go to the part where squeak was getting his ass kicked by tuttle(big dude that squeak pisses off)
tuttle and the team mates are throwing squeak back and forth, look very,very,very closely, you can see 2 or 3 wires holding squeak up.this doesn't really qualify as a blooper, but its cool anyway.
I noticed that as well, that is a basic slip up. It's even in better production films like The Matrix when Neo does a backflip from the train track. You can easily see Neo holding onto the wire.