It's extremly dissappointing when I see 'spies" or "cheats" or "shades" thrown around when you get a mission busted. It just recently happened to me, i didn't bother to respond. i would have told him exactly what had happened and how I knew where he was, but he did not ask. In that case it was very simple, he flew near my CV. The same CV his 5 buddies had flown near earlier, as they were inbound their target, and that's where I set up to intercept their mission.
Maybe, possibly there are times when you been simply outsmarted and you might learn from it ............................. or you could choose to believe there is a conspircy everywhere, your choice.
How does this relate? Maybe it is not honorable to call someone out for an activity that you are at best guessing he may have participated in.