I wouldn't bother going to court, you have no case. I mean what are you going to say? The judge won't care if someone in front of you was going 80 and you 'gave it a quick squirt' or whatever, that's still speeding ie: breaking the law. The judge will probably give you a longer sentence. Also radar detectors are illegal in every state apart from W.A, you can face fines up to $1050 and an additional $1050 if you refuse to surrender the device.
edit: And yes, the HWP/TMU have radar detector detectors... what's funny is that they make the radar detector detector from the units they seize from people lol.