Honestly, part of it is personal.

Usually this comes down to personal goals and preferences.

Be prepared to start a lawsuit.2) File a complaint with state's Board of Realtors3) File a complaint with state's Attorney General's officeSince these are unlikely to be permanent solutions, you'll also want to start searching for another PMC.Recommend you speak with @Russell Brazil

I personally think one night stays are not worth the risk.

Payments where 10k per month, principle filed B/k 3 years ago but still in house.

There are definitely multiple options and some will allow for a set amount of personal transactions per year to waive commission splits.

I have been playing the multifamily game for almost 10 years now, and the GRM is one of my least favorite methods personally since it ignores so many important factors (steam boiler versus electric baseboard heat as an example). 

First you want to be sure a police report on the DV incident and if an order of protection was filed.

From my understanding they filed for Chapter 11, that would protect them from any creditor action, any foreclosure, etc.

You're not the first person to encounter something like this (hard to believe, huh?)