Seat stud broken

[AIRBUS]

I twisted off the passenger inboard aft stud last night. Has anyone replaced one of these before?

I suspect they're bonded in. I wonder if the best approach is to drill most of the meat out, leaving enough of a "pill" in the bottom for a drift punch to push against and give it the heave ho with a hammer and punch. (?)

Thanks, in advance, for any help/ideas.