To my best understanding, NASA is looking at the possibility that the impact may have damaged the wheel-well bay door seals in some way. So your layman's understanding may prove to be correct in the long run.
"Layman's understanding" In other words, unless you are an official NASA certified "expert", go fluff Motel 6 comforters. Well, that's a piss and death attitude. That attitude is why NASA shut be shuttered at "T-Zero" -- now!