How do I break Medic's arms?

[quick bloom]

I can't get his arms into the position shown in MedicHumiliation.png. How do I force it?

(only attempted right arm)

Also I'm sorry if I missed the 'pins' mentioend in the guidelines, I am trying to look

Not sure if this fits here but #general doesn't seem like the right place.

[quick bloom]

nevermind i asked a non-gmod server and someone helpful gave me an addon that'd do it

Example

https://steamcommunity.com/workshop/filedetails/?id=104575630