Thats very frustrating!
Have you tried making him clean up his mess? Then explain that he will be the one cleaning his pants until he starts using the potty again thus keeping him from his activity even long.
Amanda . Blaming my phone for typos and crap.
Amanda- wife to DH. Mama to W (2010), L (2011), H (2013)
Forever missing Jeremiah Asher (our angel lost to Anencephaly at 31 weeks)- November 6th, 2015