Dude, they may as well have had a Joss pop-up box in the corner right before that line with a sign that said "SLASH-FEN, THIS IS FOR YOU! *MWAH*"

For reals.

Also, much with the love, Sisabet, but you know that already. Me, I've wandered so far afield on the slash side o' the fence that I'll smush people together in my head even when I know there's no subtext, just because I can. And because it's fun. And because I'm strange. But I'll totally admit the lack of justification so that's my out ;)