Fantastic post, ROB - thank goodness you persevered!!
I took from Stuart's response to the 'Will H&P get married' question that he really didn't know. As simple as that. I certainly wasn't left with any feelings of Sticks-induced 'you know what' after reading the interview.
Like you, I still have absolutely no idea what Brian, Naz, Paul & Helen did wrong at 'An Evening with Kylie'. I taped the show and have watched it a few times now, and can spot nothing amiss with their behaviour. Yes, Brian & Naz were dancing in the aisle, but so were other celebrities. I still have my doubts as to whether the 'ban' was real or just a publicity stunt.
I agree entirely with you concerning the 'I love ya' incident. It was a purely spontaneous statement, which took him by total surprise. I actually don't think Helen heard him, because her only response was 'Have I got mud on my face?'