Write Powershell script

What we need is a powershell script to unpin any Microsoft Office 2013 shortcuts that have been pinned to any users taskbar in Windows 7 64Bit. The location is usually %userprofile%\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar I don't simply want the pinned shortcuts deleted from this area, I want this script to replicate as if I was right clicking and unpinning the shortcut. What we have found, if we just delete them from the folder it creates ghost icons.