I started a thread not long ago about the Helvetia/ La Suisse team & their manager Paul Koechli, this team competed during the late 80s early 90s and were widely regarded as a clean team. Koechli was regarded as a vocal advocate of clean cycling and spoke openly about the subject when it was very much a taboo subject. The original 'Mr Clean' Giles Delion said Helvetia was the only team were doping was never discussed.
During the course of the thread, Steve Bauer who rode with this team and finished 4th in the 88 Tour became the main focus and seemed to be universally deemed as a clean rider. Someone backed long term Koechli rider Nikki Ruttiman as another clean rider and indeed fellow Swiss rider Urs Zimmermann.
How does this all relate to LeMond, well Koechli was team director at La Vie Claire in 85/86 with LeMond. The riders I named above, Bauer, Ruttimann, Zimmermann all finished top 10 in the Tour during the late 80s. Add the names of Charly Mottet and Andy Hampsten as other clean riders who finished Top 10 in the Tour riding cleanly and thats not a bad list.
If these guys could finish Top 10 and some in the Top 5/podium, I see absolutely no reason why LeMond couldnt win cleanly. Its not really a question of Lemond, its a question if you believe it was possible to win cleanly before EPO. I personally believe it was and therfore as there is no evidence against LeMond, have to accept he could have done it cleanly.