NASA is reporting that the left gear was deployed and locked just before the breakup. This doesn’t really mean much, since it only confirms problems on the left wing.

It’s much more likely that this was a symptom of a problem (the wing falling apart from the inside from all of the heat) rather than a cause, but I’ve no doubt that tin-foil-hat afficianados will be claiming that someone sabatoged the mission by deliberately deploying the gear. That is nonsense on many levels, least of which is that it’s not possible (as far as I know) nor would it be sensible to be able to drop the gear on one side only.