Hello,
All I can do is tell you of my own life, I have had BPD for almost 20 years. I have had my problems, but never has any one or any little voice telling me to do evil. it is an emotional disorder. ont a good or evil problem. stealing in my opinion has nothing to do with BPD we are what we are. From what you said about him it would seem he is using his BPD (if indeed thats what he has,) as a tool to get away with something a "sane" person never would.

Just my opinion

Shadowman