First off I think Eve's lavigne is a good referee and most of the time does a fantastic job. But after the early stoppage in the danzig/wiman match he was apprehensive to step in at ufc 118 diaz versus davis.
WHen diaz locked up that choke in the 3rd round you could tell exactly when davis left the conscious world. By looking at his stomach you could see the exagerated motions of his laboured breathing as a result of his brain being deprived of blood & oxygen. But not wanting to get it wrong again he let diaz continue to choke him unnecessarily for a few more seconds.
Even watching on a non hd 19 inch cpu moniter I could tell exactly when he went out and was like HELLLOOO he's unconscious.
Lavinge needs to trust his judgement and make decisions based on his training for his job. The safety of the fighters are in his hands.