He did also have that incident involving a shotgun. He is quoted saying he was never the same afterward and that it was a unfortunate turning point in his career. The fact that the majority of the peloton were wired to the moon on EPO certainly left a bitter taste in his mouth, in the early 90's.
Interesting though if you think that Lemond would not dope under any circumstance but was happy to soil himself and continue riding with it all running down his legs and his bike.
To summarise Lemond would rather ride a bike in his own sh*t than to dope to win. Gotta love that.
What he says is backed up by others of the era. You may have read Fignon's book.
I'm not sure what point your making with the soiling, nor am i sure I want you to elucidate!