There was just drama on track. The two lead Porsches were having a big battle for the lead and came up to lap some backmarkers, Marcel Tiemann in the lead Porsche slowed down and 2nd placed car crashed into the back of him (or the backmarker, the cameras didn't get a good look at the incident), causing a broken radiator. The team is now changing it but the car has already lost a full lap, and is likely to lose at least the 2nd place to the Zakspeed Viper, and propably more positions.
This means the number 1 Porsche is over a lap ahead of the rest of the field.