Actually, the way cars enter/exit over steer is exactly what kept me away from truly enjoying FM2. I am far from an expert (maybe someone more experienced can chip in), but from my (limited) experience with a few different RWD cars (IRL), there's always an over steer "surge" when initially breaking traction loose that you need to catch to maintain the slide (especially light-weight, short wheel base, or cars with sensitive steering), when regaining traction and exiting a slide, weight transfer of the car will result in a "jerk" both in the rear end and the steering wheel. In my opinion, both of these are lacking in FM2. If this is the "snap" you are talking about, maybe you are basing too much of your opinion on FM2's physics engine? Every games' physics engine behaves differently and you need to give it some time to learn it, simply because no one has the technology to simulate car physics down to perfection, you just need to decide which one is closer to real life.
The turn-in problem you are discribing sounds like a classical tuning-needed-case.