The new "offer" actually benefits our cheater less and still lacks the teeth to prevent him from cheating.
He gets 100K either way, but in the new offer it's stipulated that the payout will be divided over 10 years. That's a MUCH worse deal for him. Sure, he'd like to be responsible for another 100K to VIA, but he'd much rather have 100K in today's dollars, not eroded by inflation over the next decade.
To me this offer doesn't at all supersede the previous offer. He could still appear the results for some BS Via-like marathon with a sub 3:11, notify Letsrun after the fact, and claim he's owed 100K. He thinks he doesn't have to prove he ran; in his mind the burden of proof is on Letsrun to prove he didn't run. We could easily end up wtih another weak RD with no back bone that would rather take the easy road than stand up to AOL.com lawyer.
I'm not sure how it would hold up in court, but I'd still be a bit worried if I were the Brojos. The only way I think you could argue the new offer would supersede the old one is if it were to benefit him directly more. This one doesn't; it actually benefits him much less.