just to clear some things up. the wing does not stall at a certain speed nor g loading. it only stalls when the critical angle of attack is exceeded. as far as the snapping goes, the extra has an interesting feature... check this out
ok, so as you can tell, the extra has a tapered wing. this isnt just for looks. what this does is allows the plane to tip stall (a good stall is when the wing root stalls first, allowing you to have aileron authority, so snap rolls dont happen). however, due to the nature of the beast, this sucker likes to tip stall. as with previous statements, an aft CG and excessive elevator travel will cause your plane to exceed its critical angle of attack. when it stalls, both wings WILL NEVER stall at the same time. thats a promise. the first wing to stall indicates the direction of the snap. keep your speed up and think ahead. if you dive towards the ground and try to pull out too low. stall... snap.... BOOM. day ruined.