S13 forward diff mount bolt broken

[ZaK687]

So I'm trying to clean things up underneath my s13 and while trying to take off my diff, it seems that one of them just keeps on spinning without coming off. The other one came right out. Has anyone had this happen? And is there something I can do without hacking up the subframe?

[TonyTunes]

One of mine had spun loose too. I just kept spinning it until eventually the whole stud came out