Alright, this one looks a little weird... Well, you give a backhand smack to uke and knock his head off... Enjoy
(DEMO SETTINGS)

Hold all
contract right pec
extend left pec
rotate chest left
lower shoulders
contract elbows
spacex2
extend right pec
raise right shoulder
extend right elbow
Enjoy

When I started this move, it ended up as a decap and arm remover, but later on I forgot the way to decap, and it ended up as a fun way to take uke's arm off