Force delete Group Site Collection after Group Deleted?

I'm having this problem. I had a user create a bunch of Office 365 Groups. I deleted them a few days ago but the sharepoint sites won't delete. It complains about retention policy or eDiscovery. I've turned off all retention policies even though I don't think that's the issue. I also made sure there were no eDiscovery cases as well. Still, the sites won't delete even after trying the recommendations here.

I went into one of the sites and found word files in the document library. I deleted them and they ended up in "preservation hold library" which from what I can tell is an eDiscovery hold thing. It won't let me delete them.

Is there some way to see WHAT the sharepoint site thinks the retention policy or eDiscovery case is that is assigned to it?

Could it be that it won't delete the sharepoint site until the 30 days for recovery of the Office 365 group expires?

I just want this stuff gone so I can clean up the mess the users created!