I'll take a guess with LTE?
Oh, dear...it was a guess, but an uninformed one.
There ain't no such animal as LTE, as explained by multiple test pilots such as Nick Lappos and John Dixson over the years. Search for "Helicopter urban myths" on this site.
Demanding more from the tail rotor than it can produce is a more likely cause. Frank Robinson was a tail rotor expert and it is difficult to get into a situation like the one depicted without some significant mishandling.