Actually I chickened out and interfered last night.
Got home and one of the males was wound around her tail like he was constricting the biggest rat he'd ever found, and his head was all scrunched against the front of the tank because of the others piling on top, while she tried to climb a tree.... they only needed ratty denims and colours and it would have been a veritable gangbang!
So I took everyone out for a breather (and a bath - they were all a bit slimy...
) and put her in a separate tank with only one male for the night (Grendal, he seemed to most deserve a honeymoon).
The others wandered around and coiled up with anyone who would have them for a while, but seem to have all calmed down now and gone back to normal, now that the pheremones have cleared a bit!
Other Candoia breeders say they let the multiple male thing start the party, but then separate the female with her favoured male. I had intended to let it go as nature intended (seeing as we are in close to natural conditions here), but I find I am more lily-livered than I thought - must be an ancestral prudish maiden aunt somewhere in the genes.
I'm going to put them back together tonight and see if they have learned better manners.....