Tim was Plan A, but I think plan B was Mikkayla. Because of this "cat" talk, it could potentially work in BB's favour. Their best hope (after Tim) is for her to get the most amount of save votes, she is a big player in the game and a lot of the HM'S want her gone.
If Tim isn't swapped on Thursday, watch them give Mikkayla more screen time with funny and positive comments/storylines. The plan won't work if it's Ben because he isn't strategic enough, it wouldn't be entertaining to watch him do the secret challenge because he's too nice and innocent and it isn't in his character, also, it would be slightly suspicious for him to go, the HM's know he's a certainty. In saying that though, now that Tim isn't nominated, it is a 99% guarantee that it won't be Ben, unless he wins showdown, which is extremely unlikely. IMO, they'll try to make sure Tim is somehow nominated.