have just recently come across this story myself and unfortunately don't have much more to add. Here's what else i found:
another pic
http://www.mgfregister.org/forum/viewtopic.php?f=7&t=16454
and a link to another mg forum post about the event in 2013
and the following comment on the original event coverage:
Quick update & photos of day 6: I made the start line this morning with barely a minute to spare before Ned left the line - courtesy of a lift with regular Tuareg Rally UK Assistance Team manager David Lambeth (who was taking a year off this time) and had travelled down to Tunisia in an aging MGF, complete with sand tyres and a spare wheel mounted on the boot-lid!
The hydro-pneumatic suspension on the little RWD two-seater can be pumped up to increase ride-height, and it is so light it would go almost anywhere - he delighted in telling us how he'd made it as far as CP2 while reccying the first day's stage before the start of the rally!
http://www.advrider.com/forums/showthread.php?t=865985&page=30