Disembodiment as a result of euthanasia or murder or suicide leaves the non-physical part of the body confused, as it results in partial release; an unsure state of return. This is where the non-physical remains in a state of despair before it merges with the non-physical world. In quantum physics, it can be described as an entanglement of sub atomic particles that stay in that state of entanglement until it is assured that matter or the physical can hold it no more. In normal death, the matter looses its ability to hold the non-physical and therefore it is released. In our life we become so attached to the non-physical that we become reluctant to let it go and this bonding can be very well understood during a NDE or OBE situation. No soul has the right over another soul, for the soul knows when it has to go and it will go.....the lingering depends on the bonding of one's soul to its matter.