Yes, there's a good chance that, even though I was cognizant of the proper technique, I may have over-corrected. As I described - unlike instances where I've practiced the tail slide in controlled circumstances - I was driving pretty fast, and the back came around VERY hard, and quick... so I can't be sure that my corrections were just right. [I did my best

]
But it sounds like what I've subsequently read about modulating the throttle instead of an abrupt 'both feet out' technique is the better way to go in this situation.
{B-Line, do you care to weigh-in on this?}
Thanks for the suggestions!