Your suggestion sounds like a evil drama plot, but is beri good if one can control their temper in that spur of moment. Personally I ever plot to puncture 1 of my ex boss's car tyre by putting nails near it after his company cheated me some commission thing. Enjoy to see him coming office and kpkb.
He found out the wife had ONS and planned for a long time to divorce her. He collected all the SMSes for months and later get PI to gather proof. One fine day, he showed the PI report to the wife and tell her his intention of getting a divorce in the presence of the children.
The wife was shocked and the children distanced from the mother as they felt betrayed. They are still fight for custody but it appear the my friend may lose as the court still favours the mother for children of that school going age.