If they are under 5lbs, they are definately illegal.
I'm not quite sure why they go thru the extra trimming and bone removal and then advertise them as for BBQ comps. Seems like it would be easier for all involved to not trim them, leave the bone in and just call them pork butts. There would be no question then.
I only seem to see them refered to as "Collar" when they are from Berkies.. maybe someone who raises or processes Berkies could shed some light.
4000 sq inch Wood Burner named Brutus - KCSB member/judge# 32129