The Texans were wise, P.R. wise.
They got out ahead of Peyton's progressively better performances as the season was wearing on.
By signing Schaub early, and running wreck over teams--even Peyton's Broncos--you felt like, "Man! We DID make the right choice!" You didn't want a Schitty Schaub at the end of the season and UH-OH! what.in.the.hell? you mean Peyton's team has a bye and looks way better than Schaub???
This way, Schaub is forced upon you. Locked up. Now we gots cap ramifications, too, so..uhh.umm..well...we can't move him NOW!
This might be my best conspiracy theory YET!