Dave--
This sort of thing happened at CWH back when I worked there...for a brief period (a month or so IIRC) during opening hours they had the hangar doors open and a couple feet of floor cordoned off so people could see the aircraft, but couldn't actually enter the hangars! Was a similar fire-code problem, which the museum fixed ASAP.
(Not that fixing the code problem ultimately did much good, eh...!)
What was/is in the collection in Jersey? It's new to me.
S.