Biscuit, I ain't blowing my own trumpet here but they (Joy) copied the snap shot I taught the Nexus guys back in the day.
If you ask any of the Nexus guys still playing, they will tell you how and when that snap shot developed.
We started using the snap-shot I developed and there was only one other team using a similar snap and that was the Russian Legion.
I suppose about a year after we had begun using it, and getting considerable success with it, other teams began to adopt it.
I think I'll try and put one together and explain the theory a bit better in my vid, if and when I do it.