To be fair, even in the SCCA where I flag we are normally strict on this issue but if I communicate such extenuating circumstances to the stewards, the driver will usually be let off the hook. This is because the spirit of the law is to protect us, the corner workers, during a response to a stopped car. Vettel, along with some local SCCA drivers, got off the hook because they slowed and showed respect for our saftey, and didn't put anyone in any danger.