Will IRS process refund that includes non-custodial dependent before receiving form 8332

My daughter is the custodial parent of her child. For tax year 2021, she will not sign and give form 8332 to the father of the child (for reasons that I don't think I need to get into). 

 

The instructions for non-custodial parents is that they need a signed 8332 (signed by non-custodial parent) before filing. The father filed before my daughter, and without form 8332, and claimed the child.  He claimed that the child lived with him for 4 months of the year (clearly non-custodial).

 

My daughter's e-file was rejected because the child had already been claimed by the father.  I understand that the remedy for my daughter is to file a mail-in return claiming the child and that the IRS will (in due course - many months) sort it out between my daughter and the father.

 

My daughter's refund will be severely delayed!!

 

Questions:

 - Will the IRS issue a refund to the father even though he has not submitted a 8332? Will his entire return be held up until this is sorted out by the IRS?

 

Thank you!