Jay was given the ankle tag for three months at the end of July, which means he should still be wearing it at the beginning of October. He probably has to be home by a certain time (it was 7.00 pm for someone I know).
Sounds like it's to do with:
"Later, Ian hears some harsh words when Sharon dishes out home truths about his disappearing act."
All the stress has probably made his previous mental health problems re-emerge. Or perhaps parkerman's explanation is more likely!![]()