It says above that a snap is induced by full elevator, possibly with some rudder guiding the direction of the stall. So if you give full aileron to induce a roll (maybe with a little rudder), is this not a snap roll?

Also, I'm thinking the Nexstar (without the wing droops) is prone to snapping with rudder. The reason I say this is because I think this is what inspired my first real crash on Wednesday. I was coming in for landing and needed some rudder to re-align. Being a beginner and it being the first landing in a week, I gave it rudder in the wrong direction. When I countered my mistake with opposite rudder, the plane rolled over and dove into the ground, wing tip first followed by nose.

Whenever I give rudder to the Nexstar, it rolls and dives, a lot. Does this mean it snaps? I'm learning/practicing how to react or pro-act to this action, although I've flown some other planes that don't do this or do this just a little.