I don't think he's force sensitive either. I think this idea that only a force user can operate a lightsaber is just some old EU garbage.
Possibly - I mean, Han had no trouble cutting open a Tauntaun with a sabre - but Lucas always told the actors in the OT to use both hands as an indication that the lightsaber was difficult to use and hold, and physically heavy. I take that to mean that there is something special about the weapon which only a force sensitive can truly use.