No telling what happened, no them being split isn't from being fought nor is the spur length, if he looks like a RIR he probably is as most games are hard to find in a Mahogany color and RIRs are much more bulky making them easily distinguishable. They may be splitting from being so large, i haven't see it before but i guess it isn't impossible.. You can trim them if you want, there are a couple threads on spur removal you can find on the forum doing a search at the top. Plenty of articles for walk throughs too you can find by searching through google.