[StevenB]

Originally Posted by 1075guy

I'm with IndySam, please quote such a rule. I have read the manual many times and seen no such indication that descoring by any means other than tipping is invalid.

Same here. The real question is whether this would be considered illegal "outside the bumper zone contact". That's where I see the GDC most likely to rule it out, particularly using <G32> parts E and F.
On the other hand:

Originally Posted by Game Manual, Section 6.1

The ARENA includes all elements of the game infrastructure that are required to play Lunacy: the CRATER, the ALLIANCE BASES, the OUTPOSTS, the FUELING STATIONS, the PAYLOAD TRAILERS...

Originally Posted by Game Manual, Section 7.3.5.2, <G29>

Arena Interaction –ROBOTS may push or react against any elements of the ARENA, provided there is no damage or disruption of the ARENA elements. With the exception of a ROBOT towing a TRAILER, ROBOTS may not grab, grasp, grapple, or attach to any ARENA structure.