Millar signed with SD many months ago and the plan has always been for him to return to racing at the TDF prologue and try to win it clean. He will be on the team and he will ride to win the prologue. Whether he wins or now will be quite interesting.
I have always loved Millar. His interviews are hilarious and he is a great rider. Yes, he cheated, but unlike everyone else, he came clean and started to do the right thing... talking to kids about the dangers, admitting what he did was wrong, coming back to prove a clean guy can win... or at least give it a shot.
I am totally sold by his act, I wish more of the dopers would admit it and come back. He is totally forgiven by me assuming he doesn't do it again. It seems like an interesting risk for SD because if... 1. he really does intend to stay clean and help clean up the sport, and, 2. SD is really dirty as suspected after the saiz scandal. they should be worried about having a potential whistleblower on the team in the inner workings. Like an addict in early recovery hanging out with a bunch of users... that's a strange mix. Not sure any of that is true but it speaks well for SD in my mind since in David I trust.