Yes Andy needs to attack and put some time into contador as 30 seconds is not enough time based on past time trials.
I think that Andy and Berto are actually quite well matched this year and both are finding it hard to get away from the other. Having said that Bert probably has the advantage on the steeper climbs. Andy will not win GC by sitting on Contadors wheel.
I think he is scared that if he was to try and gap Contador that Contador would then hold his wheel and counter attacked to drop him.
Something has to give!
As for Arsestrong, he is making a mockery of the tour by sitting in for a ride. People are saying that he is deliberately loosing time so that he can attack on a breakaway and win a stage… but I think the old man just does not have it anymore and is simply enjoying the Tour as a rider who does not have to hurt so bad! As for riding for the team tho… he has not been acting as a super domestique for Levi??