Honestly, I don’t know what to make of it. But a few scenarios come to mind.
Maybe Eddy had inside info on something going on behind the scenes--Floyd was going to come out swinging, maybe some teams would “let” him go, etc.
Why they would do this is part of a bigger question. But maybe Eddy just saw a chance to cash in on Floyd, with great odds against him at that point, regardless of any nefarious intentions of others. He was a long shot at that point. Big payout.
HOWEVER...here’s another take entirely.
Maybe Floyd was spiked
TO FAIL ON STAGE 16! 
Negatively spiked, if you will. Maybe gamblers, officials, whoever, didn’t want Floyd to win a Tour that was pretty much his for the taking by Stage 16.
Then all of sudden the angry Mennonite-on-a-mission goes ballistic, with no extra "T", against an already decimated peloton! He would’ve infuriated an awful lot of people that perhaps weren’t counting on that!
Tinfoil hat ON!