A few weeks ago, I saw an article on one of the US newspaper's websites about Lance's difficulties. A very vehement Lance defender - in a lengthy diatribe, the kind we've seen tens/hundreds of times (usual arguments), dropped in the line "It doesn't matter if Lance did or didn't dope." Made me raise an eyebrow and think, "Oh, that's different."
There's definitely a switch in the defense of Lance as the OP noted here.
It's pretty crazy that it seems to be the same people who would swear that Lance never doped ("500 tests! Never failed!") are still defending him just as hard, but with different arguments. It seemed that having staked so much on Lance's innocence that they'd give up on him when proven wrong. Not the case.
There's some psychological trait many people have where, when one disproves a closely held belief - rather than switch their view in the face of overwhelming logic, they dig in even deeper. A classic example is the end-of-the-world nuts who survive their scheduled day of doom. Some become disillusioned and wander away from their cult. But many, unable to accept they were so wrong and had effectively thrown away their lives listening to some lunatic, become even more fervent in their belief and come up with twisted logic to explain why they're still around. ("Our belief had God spare us...", etc.)
We are going to run into a lot of that with the Lance zealots. Nobody wants to believe one's messiah was a fraud.