If you check his post history, I believe you will be able to find the difference now. His first couple of responses to this thread was written in same crappy style. But that suddenly changed in the last few replays, which made me think that either the account changed hands, or several people have access to this account.
His previous responses were like kindergarten level, broken English, missing punctuation marks, no spaces or commas etc. I understand, English isn't everyone's first language, all of us struggle here and there. But now his recent ones looks completely different, which is kinda odd in my opinion. The suspicious arise because, no one can change their writing pattern overnight. So either he is using certain writing assistant tools or the account is being controlled by someone else, as you suspect. I guess maybe someone from his campaign management team, could be could be not....