Can my ex wife's attorney make me amend my taxes without a signed court order given to me??

[Critter-3]

If you filed an incorrect or fraudulent return you need to correct it per the IRS rules. 

Why do they insist you amend your return ?    And why would it affect the Ex?

[Opus 17]

An attorney can threaten to complain about your actions or lack of actions to a judge, but the attorney cannot directly force you to do anything. But I am sure you already knew that.  If you want to understand how federal tax law affects your situation, you will need to give us more details.

[Mike9241]

make you - no. take you to court and or report you to the IRS - yes.