Not sure where teh rumor came from other than Mr. Mateschitz being a friend of Mosley’s or that Red Bull ins’t a manufacturer but Motorsport-total was posed teh question to Christian Horner who said:
“not true at all”.
Who knows where the rumors come from and at some level, I can understand the concern because Red Bull would be a question mark as they are not a manufacturer but neither is Brawn GP so I’ll chalk this up as pure speculation but with this whole mess; nothing would shock me know.