Yes...I think with the military training he's had, and the lifestyle he has lived (people "turning up dead"), that he had already scoped the area for a disposal sight, even if it wasn't intended specifically for MP. It just sounds like something he would do by almost second nature. So, even IF the skirmish was enacted in the "heat of them moment", he probably had some ideas in place, almost as an instinct.
Do we have any Sleuthers out there with military background who could give us a class in "Hiding the Body : 101"?
IMO