"After saying the tendancy of most people was to roll wings level before recovering, he was trying to explain which wing would drop as you rolled out at the point of stalling"
There are so many things affecting local spanwise stall (and consequent rolling moments) that to pontificate on this one or that is to set one up for a surprise. Aileron deflection is but one of the players ...
No doubt JF will elaborate but I should think that stall recovery is a far easier (and more predictable) exercise right way up for those who don't spend most of their flight time wrong way up ...