This thing is shaping into a very cool soap opera, if you're following closely...
Tomorrow's stage 7 will take the riders from Barcelona into France with the first of many major climbs. Several cat 4 climbs(next to the most difficult) and finishing with a cat "H" ( Hors-Categorie, the highest difficulty rating).
I predict team Astana's point rider, Alberto Contador, will win the stage and take the yellow jersey. Lance will remain in the top five, accompanied by Levi and Andreas. Team Astana will remain as leaders in the team rankings.
It may seem minor now, but Lance will be (self-)regulated into a support role.
The fat lady isn't even warming her vocal cords yet, so just wait and watch this thing unfold.