This EXACT Move Used in Dardanes & Ramos Winning TDs
To finish his single leg Jack puts a lot of pressure into the leg then brings the foot into this outside hip, as he does that he drops his hand between his leg and his thigh not allowing him to take his leg out and giving him a free hand to finish with. Ideally you want to circle behind and finish him, if he comes to his feet come up with him and finish with a tree top.