The three-giant-piston-crushers puzzle (Marked as a “generator”) just after the icthyosaur battle can be broken by throwing a physics object (I used a clip of crossbow bolts to first find the problem, then a barrel. Wooden object don’t work, because the physics system smashes them) onto one of the crushers lower plates. It’ll close on it, and won’t open again.
This probably serves me (and anyone else who gets it) right, but it does permanently disable the puzzle: Jammed crushers will never reopen, making a reload necessary.