It seems this is a message directed towards EAM Loyalists, and signed by USSS and castle_rock.  castle-rock would be a codename for someone then.  Not really important for us to know but the EAM loyalists, whoever they are, will presumably understand. As always, a vague message.  "potus twitter removal" might mean banning potus, not individual tweets, so whether the red line has been crossed is anyone's guess.  Also whether this is a bluff.  Also what the consequences are if the red line was crossed and it's not a bluff.    If there's any truth to this at all, then it would seem like there is a mutually assured destruction scenario.  After all, if castle_rock had the ability to take action against eam loyalists, why would he wait for a red line to be crossed?  Why not just do it?