correction beyond what is needed or customary, especially when leading to error; overadjustment.
That is the definition, now, that is not to say that an overcorrect is always a bad thing...There are just more bad examples than good. The genesis of this topic came from the Magic's firing of young Rob Hennigan, who came into the GM job with zero experience, to now where the Magic have hired Jeff Weltman and John Hammond as Prez and GM...with 60 years experience combined. We even saw it when UCF Football replaced old curmudgeon George O'Leary, with young hot-shot Scott Frost who could relate to today's youth. It happens all over the place; in life, relationships, hell--even POTUS is an over-correction.
The Shot Doctor gave his own list of the Top 5 Overcorrections in the history of sports. Give a listen: