The glove box lock can be a PITA. Been there, done that on numerous occasions. I couldn't find the thread I posted to, so I'll post the pics of the lock removal again.

First depress the tab with a small screw driver. That will release the lock.



Then it should just slip out.







Once it's removed, take a large screw driver and insert it in the lock bezel, if it needs to be removed. Be careful not to bugger up the bezel.