You maybe missed the most important clue to the intent, Steve - it was the self-satisfied 'Ha!' tacked on the end of the accusation.

I've come across this fellow a few times, he's a whisker or two shy of blatant trollery, makes arrogant, unsubstantiated claims and then denies having done so. Classic bait and switchery.

Don't waste yr breath mate, it's a greased weasel that nips often.