Getting on the freeway today I was pulling WOT and shifted between 2nd to 3rd (letting off the gas for shifts of course) and when I let the clutch out my RPMs spiked, I heard and felt an impressive lockup and bang sound, and the rear tires locked up and kicked this sumbitch sideways on a 4 lane highway. I immediately pushed the clutch in and dropped her into neutral then into fifth just to get off the road. It ran fine all the way home and had no leaks or noises. I am 99% positive I didn't hit 1st gear, although it may be possible I am willing to admit. I am wondering if my trans may have not been fully engaged or maybe starting to die on me. My car has an MGW orange shifter and Amsoil fluid, the oil is less than 5 days old and yes I filled it correctly.