You're probably right but best to know these things.
It's pretty simple to release park brake and/or get gearbox into neutral.
Described in the "Problems" section of the FAQs here in the forum:
The AULRO Discovery 3/4 & RRS FAQ
DISCO3.CO.UK - View topic - How is the vehicle moved when broken down?
I keep a print out in the vehicle (just of the brake and gearbox release procedures).
Cheers,
Scott

