Are you sure more of them were not caused by static?
I'm not sure where you live but if you have the heat on and it is dry and your son is wearing fleece that could be an issue. I have heard of people rubbing dryer sheets on the pods to deal with static. I had a new blanket I got as a gift that caused a lot of static and I was getting pod failures most nights. I switched back to my old blanket and the problem was solved.
Young adult with diabetes
Pumping 2/19/2003, Currently w/ Omnipod
Medtronic 2003-2015, tslim 2015-2016
CGM: MM 2006-2013, Dexcom G4 2013-2015, Dexcom G5 09/2015