With an open diff, you'll simply start spinning your inside wheel. With LSD, it's possible that you'll spin both wheels and your ass end will swing out like you experienced. As has been said, sounds like too much throttle followed by over-correction.

I've intentionally gotten the rear end of mine to slide around wet corners in much the way you described. I find it mildly entertaining. Around these same corners in my open-diffed pickup, I just spin the inside tire without sliding.

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"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin, 1759