Well, Teddy is certainly a believer of the hoax, but to go deeper than that? I don't know. He might know something more than us. He might be involved in the hoax. He actually could've done that "slip up" on purpose-- to get people thinking or something like that.
I mean, if we look back to the year 2010, Teddy Riley tweeted in crude words, that he believes Michael is still alive. After that, he responded to someone's question; -- "Akon said he believes Michael is in hiding and will be coming back one day. Im curious to know what ya think bout that." -- which is when he responded; "AKON IS MY FRIEND AND WE THINK ALIKE.". I reckon this is all very old news, but I just wanted to put that out there-- as a reminder.
Just saying. I'm not sure if they're involved in the hoax, kind of working as MJ's left and right hands from behind the curtain. But they both certainly are believers of the hoax.