Having life is always better than not having a car.
Not knowing this ramp as I'm from the other side of the country, I'm curious on how a setup like yours can lose it...at 40mph.
What kind of tires were you running?
Was it a wet road?
I'm starting to see in a few auto-xes with the subies that by eliminating the body roll with springs/struts, because of the semi-lightness of these cars, you're not transfering weight properly to the outside tires on a turn.
Also, it seems as if the stiffer suspension is eliminating the Passive Rear Wheel Steering by being too stif and not allowing the left/right rear to "turn".
I have a 20mm on stock suspension and I can keep up with the fastest of the cars. (except some wickedly fast SCCA SS Cars). The Cars with the stiffer/tweaked suspension are not as lucky.
And I'm also starting to see a trend on more of the guys with a tweaked suspension losing it more so than the guys without.