MonkeyMan Disassemble

Pitt and MM have very different engineering....

Pitt has the regular pegs and sockets. You can pop them on and off anytime.

MM has pegs that lock into the socket once you insert them. No way of getting them out without breaking the parts open. This is why Toybiz made the pegs for each side (left & right) a different size to make sure we put each peg to the right hole because once you pop, there's no turning back.

Kyle Robinson dissasambled my Pitt before shipping him and he had no damage from it. Maybe ask him how he did it.

You can never disassemble a MM figure once you pop the pegs in place. And I mean... NEVER!
The pegs have a locking mechanism. Only way is to pry the parts open but you will surely break them.
Then you need to glue em all back together and sculpt over the cracks and repaint. Bad move.
Only removable parts are the head and feet via boil-n-pop.

Have you tried heating the pegs?