Fed up of scrums collapsing?

[hookender]

The ref in the Pau v Brive game is

 Just been keeping an eye on this Top 14 match which seemed to be having a lot of messy scrums (even though ref was trying to let a lot go) finally had enough and yellowed both TH for Pau and LH for brive around 60th min

 Often hear refs threaten to do this ,but to actually carry through …