Mmm, that will teach me wont it eh!!
Q. Do I think he was going for sutemi waza?
A. No, I think Mitchell would agree that he was going for it at all, it just kind of worked well, and his hand and body rotation pulled Uke into an Ippon,
At first I had this throw as more of a yoko otsohi due to Ukes landing, I have looked at the video again and again, and can understand why its a ko soto gake, his leg does actually hook to the rear of Uke first, and doesnt slide down to his side etc,
I think one of the biggest problems are with interpretations of many of the images of techniques,

kosoto gake