Trying to run appcmd.exe against Exchange Back End/Microsoft-Server-ActiveSync

I'm manually removing the Trend Micro WFBS Messaging Security Agent (MSA) from my SBS 2011 (Exchange Server 2010). One of the steps is to run this command:

C:\Windows\System32\inetsrv\appcmd.exe list module /module.name:SMSEXActiveSyncHook /app.name:"Exchange Back End/Microsoft-Server-ActiveSync"

Running it I get: ERROR cannot find APP object with identifier "Exchange Back End/Microsoft-Server-ActiveSync"

How should this command be written?