It looked like a KO to me and I thought it was his head crashing against the floor but after a few replays, yes, it's a Breakfall with a Right Hand slapping the mat.
Ellis just walks him down. If he were uncertain or fearful (in the correct sense) he'd be a damn sight more cautious for fear he'd be countered. The vid suggests he knew precisely what was going to happen.
I would add that I don't think it was appropriate in front of minors.
Damn. And I thought Jay Dods was young. What's the age of consent in England?
My roommate just told me that this was all over the news here, and how outraged a certain member of his family was, until he explained what was going on.