to meet with lance armstrong and johan bruyneel and explain the e.p.o.ss, which he told us was unprecedented. and i asked him, "did you give lance armstrong and johan bruyneel the keys to defeat the e.p.o. test?" and he nodded his head yes. >> pelley: tygart believes armstrong had influence over the u.c.i. lance armstrong made a generous donation to the international cycling union of $100,000. do you think that was meant to influence them? >> tygart: i don't know. obviously, totally inappropriate. >> pelley: why inappropriate? lance armstrong's trying to support anti-doping in sport. that's what he would tell you. >> tygart: it's an inherent conflict of interest. during that interview last week, armstrong was asked about that 2001 swiss test. >> armstrong: that story isn't true. there was no positive test. there was no paying off of the lab. there was no secret meeting with the lab director. >> oprah winfrey: the u.c.i. didn't make that go away. >> armstrong: nope. >> tygart: he exonerated essentially the u.c.i. and our information is... and the evidence