If pages were substituted, it could be set aside. I think either by a timely motion for new trial or suit alleging fraud. Take the papers to a lawyer ASAP and get moving on it.
I am not intending this to be legal advice, because I don't know the particulars of your situation. Call me if you would like to discuss this or other isues.
You need to file a motion for new trial ASAP, assuming it's been fewer than 30 days since the court signed the order. In the MNT, allege fraud, mistake, etc. Also, if the decree you signed is different from the decree they entered...and you can prove it...then ask for sanctions against the attorney and your ex spouse. But make sure you have a solid basis for doing that.
This is procedurally dicey since the legislative changes of 2013 relating to new trials. Please hire an attorney to help you get this right.
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