Even months ago there was talk about Houston maybe not going QB at 2. They're still gonna be a bad team in contention for the top pick next year. Their front office might prefer to get a haul for the 2nd pick from another QB-desparate team.
I'm not convinced they pass on QB, but it wouldn't be all that surprising. I think there's more to it than just the typical pre-draft smoke that we hear every year around this time.