LSP doing backflips!

I just learned the downside to putting 50K oil in the center diff of a brushless truggy. I do not have video, but i will soon. I dont know if any of you have seen the video of the RC18 doing a backflip on 3S lipo, but this was almost the same. Doing some test accerleration runs, I noticed how much faster the LSP accelerated with the 50K center diff oil, then I made the mistake of flooring it. Left the ground and landed on its back, luckily nothing broke or came loose, but my front suspension will not rebound any more. The drivetrain is fine, what could be the problem?