I'm just looking for confirmation.

Saw a thread on dead EAS where someone jacked up the rear axle to access height and the system recovered. The hypothesis is that some cars go so far out of range when deflated the ECU throws in the towel.

Any grain of truth to this?

It has been found to work in some cases, not sure why, possibly as the height sensor readings were so far out it gave up and did nothing, or just that the ECU wanted to see some sort of movement. You've nothing to lose by trying it.

Did you get my PM?