Its an interesting theory ... I pretty much had this conversation with a driver at our local club at the weekend ...
He was saying how fitting a small wing on the bonnet of his 2wd car had stopped it from flipping at the end of the straight ...
.. and funnily enough I had tested the same wing on the same car in our windtunnel that we are building ... and scales said it made no difference at all ... not a jot ...
I mentioned placebo but we wouldn't have it