As you stated in your edit and annoying as it is, you won't be able to weed out this behavior. I get really upset if it's clear the other team is intentionally either manipulating their connection or performing a low level DDOS, and then "teabagging" after winning the match. It happened once this past weekend and a couple of times over the last few months (very obvious cheating behavior, not simply a bad connection). The teabagging this past weekend, along with being waved at while I was shooting this particular individual who was not taking any damage was a dead givaway. I only hope Bungie continues to investigate the reports while ToO is on hiatus.