Johnny5, as the president of Quaethem Family Motorsports, and one who has seen this truck pull many times, there was absolutely no reason to stop that truck. the water exiting the truck was coming from the overflow tube. It was determined later that the truck had blown a head gasket. There was absolutely no danger to competitors or spectators at any time. My guys on the flags were well aware of the water coming from the truck. They were also well aware of the problem with the Dave Gresh truck. Again no danger to spectators or competitors. The drivers/ builders are well aware of what their truck is doing as they pull that sled. Myself and others have discussed options as to warning drivers about percieved problems as they pull down the track. We are looking into possible remote warning devices and or shutdown devices. One of the problems with shutting down a vehicle pulling a sled, is the fact that after you have killed the truck, the sled will continue forward hitting the truck. This results in more damage to the truck and possible injury to the driver of the truck and sled operator, not to mention the track officials and crew members. Also the Monster truck "Disaster" you referred to was not in the hands of the crew members, but in the hands of the USHRA, who is in control of the remote shutdown devices. This "Sport" has become a demo derby of sorts, where the fans expect to see trucks break and or roll over. The driver of that truck more than likely knew he had a problem but was being paid to put on a show, Which it sounds to me, he did. Again unless there is danger to spectators or competitors they will not normally shut down a vehicle.
Attention: TDR Forum Junkies 
What did you do now Brair?
But I'm sure I'll hear the whole tale one day. 
