Is it the sponsor and the riders you're referring to or what? Bruyneel must have known what he was getting into when he signed on with Astana, being that it was a Vino creation, made by him for him.
"Rumors about a doped rider"? That is quite interesting considering who he's joined at the hip with but this topic belongs in the clinic so let me cease.
Astana as a team has far exceeded most expectations to the surprise I'm quite certain of Bruyneel and Armstrong. Doubtless that is was their intent to cripple the team out of spite for Contador's insubordination and Vino's power grab during the Tour that had to be embarrassing for Bruyneel. How dare they not genuflect to the majesty of Bruyneel and Armstrong? The nerve of them!