There are 2 little tangs on the button that hook inside the handle. If you find one in a junkyard be very careful trying to remove it, best thing to do is relieve the tension on the cable. Of course, that means pullin' the console and stuff but that's the only way I know to expose the handle assembly so ya can work on it.
Need a pic? I have a 5spd that I'm pullin' parts off of today and can grab a shot of whatever ya need. The seats and console are out of the way (I think the seats are sold) so a pic wouldn't be much of a problem.
'bird