Any suggestions on getting it out?
I've tried using vise grips. There's not enough material protruding to grab.
I'm considering using some gorilla glue to just stick the button back on and forget about it.

 

sad that I have to post to my own thread but maybe someone will benefit from my resolution to the problem.
What I did was take a small hacksaw and cut a slit in the top of the protruding screw. Then I simply used a flat head screwdriver to back it out.
Installed a new rotor button and it runs like new.

 

I guess no had any ideas, that is, except you. Good job

 

You also have to realize we are not on here all the time, patience is good. I know sometimes you need an immediate answer but we always cant provide that, especially the time of year.

I am glad you got it figured out and thank you for posting your solution.
Some people just say they fixed it and never come back. Thank you for that!