I don't see any reason to stick around and find out. I had some money at a broker who clears through them and took it out last fall when the writing was on the wall.
Then you see they had a major cluster with getting their 1099s out in a timely fashion, and probably full of errors.
When it comes to these sorts of things I suggest shoot first, ask questions later, since even if you are fully insured, it could take quite awhile to be made whole if it unwinds...