Per definition a sudden stoppage absolutely. But as i wrote "i wouldn't describe" i meant it isn't the "classic" sudden stoppage with a sudden strength decrease in RPM. Sorry!
This is a scenario the MGB goes away may be nearly without a RPM drop. 90-100% as long as the MGB was connected to the engines, means may be 2-5 seconds. It's the same like shooting away an outer part of a blade in combat.
And this was a german BK 117
The BK 117 from the land of the rising sun have no certification in Germany