Ken, if he's had brain surgery for a tumor, it wouldn't surprise me if he doesn't really know what he's doing. This might be a psychotic episode brought about by the surgery. Something may have gone wrong physically with him of late and it's only starting to kick in now. Or he's found out something about his present condition which might be related to that surgery and the cancer. I hope the cops know about all this, it might make them think about how to approach this (or then again, knowing them probably not).
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