Presumably, a lawsuit would qualify as extra-ordinary circumstances; and the series organisers will be under pressure to allow Dragon to sign up with a new manufacturer, or they face falling well short of a full 33-car grid at the Indianapolis 500 on May 27 - which would be acutely embarrassing for the sport.
No one from Dragon, Lotus or IndyCar was available to make a comment to the media when the story broke.
Given the strong relationship between Jay Penske's father Roger and the Chevrolet marque, it's expected that Dragon could find a new slot as part of the bow tie brigade, but time is critically short for them to do so as Opening Day at Indianapolis Motor Speedway is just five days away on Saturday.
Roger Penske is quoted by SPEED.com
as saying that he understands negotiations are underway between his son and General Motors, but that he himself has not been a party to them. "I want to see him in the race," the senior Penske is quoted as saying. "He's got a helluva driver in Bourdais."
Indeed, Bourdais' performances have been almost the only shining light for Lotus since their late entry into the IndyCar engine supply scene, with his ninth place at the Honda Indy Grand Prix of Alabama the best result of any Lotus-powered car in 2012.
Losing Dragon from their line-up will leave Lotus with only one car in the series - HVM Racing's car driven by Simona de Silvestro - and almost certainly no longer a commercially viable operation.
An announcement about Lotus fielding Jean Alesi in the Indy 500 through a one-off deal with a Firestone Indy Lights team is also said to be on the verge of being formally announced later today.