With greatest respect friend,
Mr.Paulson attributes the entirety of his selective rolling based on the possibility of assuming the negative energy of others in the above interview, and he does not make any reference to being 'war torn', injured, or the possibility of being injured down to the reasoning behind his selective rolling. Furthermore the reasoning behind this belief is fuelled by the acceptance of the existence of archangels and negative energy which disrupt your passageway to the frequencies of the angels.
Perhaps the 'war torn body' reason you have put forward is more of an attempt to understand his strange perspective yourself, rather than an actual reason stated by Mr.Paulson?
Regarding the archangel statement from Mr.Paulson, further investigation shows that the process of 'archangel attunement' is a form of spiritual attunement which allows oneself to be tuned into the frequencies of the archangels such as Michael, Raphael, and Uriel. This is due to a belief that one requires a 'bandwidth' to angelic connection, for the purpose of angels actually existing and providing assistance.
Sources:
Free Archangel Attunements