Team orders are allowed now, but I think last night it was a case of common sense. Webber wouldn't have been able to get the job done so I think the team was just making sure they didn't take each other out on the last corner.
Dry ice is good for large areas, but heat gun is defs the go for everywhere else.
In fact on Martin's alfa we found the heat gun to be more effective than dry ice.
Heat guns are like $30 at bunnings.