I read that from Q'uo as well. I believe that is true, considering there is a seniority of vibration, meaning we are advanced enough to plan our incarnations with our higher self. From my personal experiences, I came up to one of those pre planned death points. I felt that indeed I could have died, but I was no where near ready to leave and I healed and recovered. One's will to live plays a part, in my opinion.
I'm not sure about pre planning murder scenarios because murder is an ultimate violation of free will. I think some people lose track of the light in incarnation and through choices made they lead themselves to evoke the murderer within. I'm sure karma has something to do with how paths are crossed though. We do make agreements and contracts with other souls, so I think it's a combination of forces.
Anyway, these are my thoughts on the concepts, hope that I've been of some help!
I'm not sure about pre planning murder scenarios because murder is an ultimate violation of free will. I think some people lose track of the light in incarnation and through choices made they lead themselves to evoke the murderer within. I'm sure karma has something to do with how paths are crossed though. We do make agreements and contracts with other souls, so I think it's a combination of forces.
Anyway, these are my thoughts on the concepts, hope that I've been of some help!