[r5e]

Interesting suggestion, but sadly no luck. I disabled all plugins via config.php and confirmed that the "Manage Products" page says "Warning: Plugins are currently globally disabled via config.php."

Attempting to prune this usergroup correctly lists all 744 instances of the "supportvb" user, but on each of them it shows they are also in the "moderator" group. The ! appears next to every one of them and therefore I cannot perform any actions.

Curiously, looking at the tables directly via phpMyAdmin, they seem to only show only "17" (the group I put them in) for the usergroupid column and nothing at all in membergroupids. Looking at any of these users from admincp, they all show they are a member of only this group and no others. However, as soon as I see them from the prune list, it shows them as moderators.

If there is a safe way to simply remove them all from the database directly, I'll give it a go, I'm just loathe to try it in light of the funny way they are already responding from my first attempt.