Is that droop on the droop gauge or uptravel above ride height at full suspension travel?
It sounds like you have too much traction on the front. Less droop (by this I mean tighten down the droop screws) on the front and a higher ride height on that end may help. Also you should have softer springs and softer setup on your shock mounting positions in the rear than in the front.
If you have enough traction in the front and you yank hard on the throttle coming out of a turn when the car is already digging in to the outside you can spin it out. This is particularly pronounced with a spool in front but could happen with a nice tight diff also, particularly if the rear diff was looser.
Without a full layout of your setup it's harder to diagnose. So post a full setup including shock positions, etc. will help. Have you put the car (battery strap tightened down) on a tweak station? All the above assumes nothing is mechanically wrong or tweaked with your car. If you don't have a tweak station, borrow one... or if not available, at least try to eliminate any possible tweak (loosen and then retighten all screws in a crossing pattern ... also be sure things like tightening down a battery strap isn't warping the chassis (after all your adjustments are made when you don't see it). A tweak free car should be able to set up with everything (linkages, shock collars, etc.) in fairly symmetrical patterns and dimensions left to right.
Let us know how it went this weekend.