The Director's Cut is not a deleted scene. A director's cut is just what it says - a director's cut of the dailies reel from the episode. It is uncut, unedited with no effects. It more than likely will be in the episode; it might be slightly edited but chances are this will be seen Thursday.
Actually Season 7 of Smallville is turning out to be pretty great IMHO, and Kara (Supergirl) kicks some serious ***. The show has been getting better and better since season 6, at least from where I sit.
If Dean ends up playing the character we all hope he will be playing, it could actually be a pretty iconic role and set up for some interesting return opportunities. Time will tell.
Yes I post over at DTS, I also post at Bluetights. But I don't watch Supernatural, never have, so I'm not sure what that has to do with anything? I don't post at their boards either.