I'm using Paredit and was studying the cheatsheet. The source and documentation suggest that M-( should trigger paredit-wrap-round but on my system when I use C-h k M-( to find the keybinding for M-( I get:
M-( runs the command paredit-backward-slurp-sexp, which is an
interactive compiled Lisp function in `paredit.el'.
It is bound to <C-M-left>, C-(, ESC <C-left>, M-(.
...
How do I find out what is rebinding M-( to paredit-backward-slurp-sexp and make it back to normal?
You can use an external tool: describe-key-and-map-briefly to find out which keymap the definition is coming from, then advice around define-key to log load-file-name to show where the guilty call is coming from.
Before all that, you probably want to make sure your version of paredit isn't doing anything weird by using emacs -Q and loading just paredit and checking the bindings.