I get a kick out of comments like this from the article:

"Armstrong has won two 70.3 (half ironman distance) triathlons and it is understood he sees the sport as the best way to make money given his sponsors have deserted him. "

Lance's motivations are hard to discern, but I highly doubt that he believes the piddly sponsorship money associated with being a pro triathlete is going to provide him long-term meaningful income.