No Gi submission grappling

Jumping up before slamming someone to escape a triangle will result in a head-butt; that fact reflects simple mechanics. The referee ruled the head butt in this match an accidental clash of heads, but note that the referee was from the same club as the head-butter. Neil Spiring was totally cool about the incident. Was malice a forethought? Was the referee correct to rule this an accidental clash of heads? Should slamming be allowed in amateur submission grappling tournaments? Harman Degun vs Neil Spiring SAS trials. Finals match under 77kg division.

Straight foot lock counter by rear naked choke. Took place in Indonesia Submission championship 2008.