I've got it narrowed down to 5 in my mind... (I know, 5 out of 13. I've got this whole game figured out!
) I think it'll be either Andrew, Brendon, Matt, Britney, or Annie.
With Eric and Dan previously serving as America's Player, I think BB is due for a female mole, but I think the only three women in the game smart enough to pull it off are Annie, Britney, and Kathy. But for whatever reason, I don't think it would be Kathy. As for the guys, Lane already said he doesn't like thinking, so I don't think it'd be him. Ragan's DR confessional they played after they revealed the twist to the HG's makes me think it's not him (plus I don't think BB would cast only one gay man and put a huge target on his back). We already know from his contestant thread that Hayden's never seen the show before, and I don't think Enzo could pull it off (I see him as more of a comic relief/villain-type role).
Just my two cents. In order of likelihood, I would rank them Matt being the most likely saboteur, followed by Annie, Andrew, Britney, and Brendon.
(And FWIW, what does "Session Verification Error" mean? I've been here for two months and this is only my second post because I kept getting that error message.)