I have had similar happen but there was no "reveg" stage unless I took a cutting. If the cutting rooted then the top would go back to growing single blade or single finger leaves for a couple of weeks.
I had brought it up and posted several photos (even with leaves that had mite damage) of a Blue Dream cutting that when it started to root it then started re-vegetating.
https://www.420magazine.com/community/threads/need-flipping-advice.527344/post-5717729
these reverted from the original plant. they weren't cuts at all. i think it was a grow on here. probably the first hempy i tried.