If you truly think there was a build policy violation, report it to the arbitration board. But, they will probably just laugh at you. Daniel Wright is just really, really good at towers.
Agree with East: don't accuse people of build policy violations. It's impossible to tell by how good the device is. In fact, in my experience of impounding builds, the teams with the best devices were also the most knowledgeable about their devices when questioned. It simply takes a ton of work to create such a good device.
University of Michigan Science Olympiad Executive Board