Automated Deployment to an F5 Load Balanced Environment
I haven't used it, but have you looked at the F5 iControl web service API and the F5 iControl PowerShell cmdlets provided by F5. The PowerShell cmdlets have been around since 2007 and can be downloaded from F5 DevCentral.
It looks like there are Enable-Member and Disable-Member cmdlets that you'll be able to use.