Having been there. The start marshal brings the riders to the tapes, when he is satisfied that the riders are in line and stationary he drops his arms. He moves forward and the Ref puts on the green light. The riders are then under referees orders and the tapes then rise 1-1.5 seconds after the green light comes on.
Surely it's not the ref's job to beat the riders? I think though that it's the rider's job not only to beat the opposition but to anticipate the ref releasing the tapes. If a rider moves (forward) but doesn't touch the tapes good on him, but if he moves and causes another rider to touch the tapes then the ref could exclude (or is it disqualify) him.
It was the oldco who "sold" Morris. I must say that I think that it was wrong that Swindon could loan out Morris to another club when he was on loan to them.