Dave4086 mentioned that one of his friends also got shut down. And I'm sure plenty that get shut down don't post here.

Looks like low hanging fruit for now. The first people to be shut down are going to be the ones who do $1k/$1k/$500 and almost immediately withdraw everything. We'll see if they start to shut down others.

It's interesting that the letter didn't mention using a credit card to add money to his Redbird. I expected that to be a flag.