If a plane has a wing loading of 35 oz/sqft, it has to fly 20% faster than a plane with a loading of 25. Otherwise it flies the same. If you are used to landing at say 20 ft/sec with a loading of 25 then you need to up it to 24 fps with a loading of 35, not a big thing. But you must fly it faster - it is not an option and it feels different for a while.
The heavy loading doesn't affect the tendency to snap other than the speed at which it occurs. As a wing slows the angle of attack required to generate enough lift to hold the plane up increases until it exceeds the stall angle, then down it comes. Heavy planes hit harder and usually break more.