If the parties are in agreement to amend this, then this is easy to do and yes, it is possible. One can file a pleading to amend the decree based on the parties' consent.
However if the parties are not in agreement, then this is generally much harder:
1) The sale of the home is only possible to stop based on an appeal to an interlocutory court or a motion for new trial, often within a very short amount of time such as 30 days.
2) Alimony (spousal support) is possible to amend, but one would have to show that there has been a difference in circumstances and one of the parties has gotten remarried, has been ill and not been able to work, has inherited money, etc.
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