[Matt C]

I see no issue with that design. the "bumpers" that come down to enlarge the footprint of the robot are not BUMPERS as defined in the rules. The BUMPERS are only the segments attached to the FRAME PERIMETER. It is only those that must be in the BUMPER ZONE and adhere to the bumper rules.

(Remember that the BUMPERS are not part of the size/weight restrictions of the robot, but your "bumpers" are)

As an inspector, I would not allow this configuration as it stands. If the flip down sections were smaller and fit within the FRAME PERIMETER(when upright), then it would appear to be a legal configuration.