oldrooster said:
The practice is continued in the next life as well, a man can be sealed to many women in the temple. He is supposed to have those wives in the next life......
You are reading many things into this. While you could assume this from the facts in evidence, I don't think you will find a doctrinal position on this. Consider:
* In 1890, Plural Marriage was banned in the US, but permitted outside the US. Those already in plural marriages continued in the married state.
* In 1905, the ban was extended to the entire world by Joseph F. Smith.
* Whilst no ban was placed on sealings, several restrictions were introduced to reduce this practice. A divorced man must have a Temple divorce before being sealed to another wife.
* In proxy cases, if a wife has more than one husband she is sealed to both. The reason given is that the wife can then chose to whom she remains sealed.
* It is reasonable to assume that the same may be the case for a man that is proxy sealed to more than one woman. He may choose which wife he remains sealed to.
* It is also reasonable to assume that the man may remain sealed to more than one wife.
All comments must be considered that the 19C church had a very much "in-your-face" policy towards plural marriage with its critics.
I tend to think that the purpose of plural marriage was to raise a righteous generation in the shortest time possible, rather than being an eternal principle - which I think is secondary to its introduction.