Today I was playing on danger canyon and encountered a situation I would like clarification on. I was walking to my nav at the elbow of the canyon because there were no hogs available. I had picked up a rocket launcher to defend myself and/or use to acquire a vehicle. So I had gotten my nav and was walking up the hill to the base when along comes a chain hog containing a guest and BFM_Ryder93. I shoot the hog and kill the guest, ejecting Ryder. As Ryder is walking back to the vicinity of his hog I kill him also. He said this was unnecessary and against the rules. If I'd known it was a BFM I might have assumed he would not engage and left him alone but I thought it was a guest who was liable to attack me, as often happens. I also needed to get a hog. Simultaneous to all of this an allied lone chain hog drives through the area but does not appear to be stopping for me. Was this against the rules since there might have been a hog available for me other than his? I am not accusing Ryder of incompetence but I would like a second opinion on this situation.