Hi,
I would do a get first:
Get-ActiveSyncMailboxPolicy
This will give the names of the policies you have.
Then you could remove the one you want with the command
Remove-ActiveSyncMailboxPolicy -Identity "name from above command"
Cheers
Nathan
Nathan Winters - MVP Exchange Server
MCSE & MCSA 2000 & 2003 + Messaging, MCITP Exchange 2007, MCP, VMWare VCP v2 & v3.
Welcome to the Microsoft Messaging and Mobility User Group: http://www.mmmug.co.uk