Had the same thing happen years back in Madoc with the OPP. He asked for the detector, I said "a moment please" unplugged it, then smashed it under my heel, handed him the pieces and he handed me the ticket. Wouldn't discuss options.
Bottom line though- Detectors are illegal and the law allows the OPP to sieze them.
I wouldn't waste my time in court.
"He said he didn't want to shine, but he looked mighty shiny to me"