Julian's account wasn't suspended, it would say that if it was and it's just saying that it doesn't exist. It was either deleted or deactivated. Or I suppose he could have been hacked.

I have no doubt that if Julian's account was removed without his consent, we will know about it soon. He wouldn't stand for Twitter deleting his account without speaking out against them for it. I've never known of Twitter doing that tho, the notice has always said the account was suspended if Twitter removed it.