Thanks for illustrating my point about fuzzy questions of whether Tuvix is "natural" or "unnatural" and stuff like that.
There is nothing natural about death and creation at the same time. Pretending that there is a natural order which we can reestablish is pagan thinking and I thought we left this behind us thousands of years ago. Then again people often revert to such thinking when they face catastrophes.
The proper, modern way to approach the Tuvix problem is to first and above all accept what Sci has pointed out. Two people have been merged into one and there is no easy or "natural" way out. No matter what you do, blood is on your hands.