In the most recent round of spam, the spammer used a number of instances but most were able to shut the accounts down quickly. However, eviltoast did nothing, despite another instance Admin reaching out to them and two of the three eviltoast accounts were able to keep going for days, creating a mess that still isn't cleaned up properly.
It was taking up a not inconsiderable amount of time to play whack-a-mole, so we defederated and enjoyed the peace and quiet.
As has been said, eviltoast have taken steps to get their house in order, so we are now refederated with them. Thanks for nudge to sort it out.