I don't think they have different policy of shipping golf bags than other airlines.
Usually after you check in your luggages, they will ask you to put it into a trolley that holds irregular size baggages or put it to some counter that accepts irregualr size baggages. As long as you are within the 2 pieces of luggages.
Long time no see, why don't you join us for a game or 2 before u return home?
check this out at www.golfBC4fun.com and have fun
sidehung