From the VEX Robotics Competition Elevation Manual, Section 2 - The Game we can see that definition of “Scored” is as follows.
There is no mention in this definition of the word “supported”. If a cube fulfills the requirements of this definition (1. Some part of it is within the goal boundaries, 2. Not being touched by a robot of the same color) then the cube is considered scored. It does not matter what else is going on with the cube, and does not matter if this was a deliberate strategy or not. These are the ONLY requirements which determine whether a cube is scored.
If a referee makes a ruling you feel to be incorrect, it is your responsibility to challenge this ruling and present supporting evidence from the OFFICIAL game rules (the game manual and Q&A responses). Ultimately though the referees have final ruling.