The standard would be: the coordinator is blinded, so it wouldn't know whom to block.

However - don't know if the blinding happens client side, or server (=coordinator) side. In the latter case, you are obviously at the mercy of Samourai running the actual same coordinator code as on their Gitlab.

Btw, This would be the same attack scenario I described about how Wasabi could use Chainal to deliberately certain into a less private rounds