windows 10 pro domain profile endless copying

Hello,
I had a user setup on a pc in the domain, Paul. he needed to use a different machine. So I added him as a user to the new machine and logged him in. during the login process I got a message that he had a profile on another machine and did I want to copy the profile.

Well since I was going to move his stuff anyway, I said yes to the prompt. That appears to be a mistake.  The process has been copying all his files in an endless loop every time he logs in. it filled the c drive before I realized it. it also appears to be spiking the disk io.

any one seen this before?   I  was thinking of dropping the profile and recreating it, saying no to move it this time. It has been hard to delete the dupes due to the disk IO being so high.

thanks.