It was the only way I could think of to re-establish trust, and now I don't know of other methods.
perhaps ACCEPT that he cannot be trusted? you handed him the chance to prove he takes parenting seriously and prove that he is willing to do whatever it takes to have time with his son.
and what did he do with that chance?
blew it.
literally.
with an air hose.
IMO, i'm sorry doesn't cut it here. how many thousands of i'm sorry's have you heard by now? he cannot or will not put his child first. that leaves you no choice. he went thru a LOT of work to try and trick the Sober Link. it was premeditated.
what do his ACTIONS show you??