i have replaced buster quite w few times using a pin, a needle or whatever i just could get hold of. never broke anything.
A short list of the things I've succesfully used without damage.... paperclip, xacto blade, sewing needle, screw driver, multi-meter probe.....
I still would recommend you get the $3-4 tool as I've seen other less careful or skilled folks wreck their sockets.
Plaz