I couldnt help wondering how your wife feels after realising the OM has no interest in protecting your son or being at least discreet. Sometimes things like that make us "see" things, you know? Make the OP feel like an "intruder" of you can get my thiking. I hope that's exactly how she felt.
I havent yet had to "meet", "face" any OPs, nor my kids. But I sort of understand how that was difficult. You handled it fine though, as always. xxx K