The FIRST time we used our new Stampede squeeze chute, I forgot to close one of the neck-access doors, and the next calf, a 300 lb heifer, squirted through and hip-locked. Couldn't push her back- her ribs wouldn't let her go back; tried flipping her on her side and pulling her out like a big-hipped dystocia calf - no dice.
had to run next door and borrow the neighbor's Sawzall and cut the bars to get her out!
I'm pretty diligent about making sure that sucker is closed now!