89 Burb overhead console bracket removal ??

[Electricduane]

Hi, I have some rust under the console bracket (antenna mount hole leaked a bit apparently) . . It would be nice to be able to remove it, clean the rust, and put it back on.

Any advice? I don't see any easy way, and maybe no way, to remove those weird rivets so that I could reinstall the bracket. Maybe a nutsert? There's definitely not room to stick a nut behind the locations where the rivets currently are.

Thanks for any/all advice.