One question I've been searching for an answer to since his confession is whether FLandis actually was using synthetic testosterone on that day. He's otherwise been so (seemingly) forthcoming, I've always found it odd the he's never remarked to the truth of it.
At about 1:35 in the segment titled, "Shock, cold sweats..." he says,
I knew I couldn't defend myself because I could say, 'I didn't do what this says I did,' but I couldn't say 'Here's what I did do'....
Which is the nearest I've heard/read him coming to say unequivocally he wasn't using Test on that day.
Later in that same segment, speaking to USADA's offer to be lenient if he would rat on Phamstrong,...
...I found it offensive. I found it as if ...as if they didn't care whether I was guilty or not, they were just happy that they had a circumstance where they could leverage somebody else's life to get what they really wanted. I felt like I was the guy in the middle ...and ...they're [USADA] not a government agency. Government agencies can do that; police forces, FBI, they can do that. Give deals to criminals to get other criminals. This is not that, this is a contractual agreement I had with them. They can't use that as blackmail against me to get someone else. And that upset me a lot, ...I mean ...things like that that happened along the way made me even more determined to fight. Because I didn't want to admit it and help them. That would make them look like the were actually doing their job, when they're not....
So if he happened not to be "glowing" (Tyler's Hamilton's metaphor) from Test on that day, and if USADA's pressuring to get him to grouse on Pharmstrong got his Mennonite dander up, I think that goes a long way toward explaining why he went to such seemingly absurd lengths ($2M USD) to contest his conviction.