That's a very bad day out for Andrew.
For anyone thinking electric is louder than nitro, my Trex 550 came in at 76db and my Srimok Faifa was 79db. As Dentman has said most of the 50 size intros were 82db and as discussed some of the 90 nitros failed. (apart from Dentman's lovely Srimok N)
I really hope we at the club get this noise issue sorted out so we can get back to normal and just enjoy flying and watching others fly. It's such an lovely place to spend time and enjoy our hobby so hopefully it'll get sorted soon.