Starting a Service Application Proxy via PowerShell

If you need to start an application proxy thats crashed or for some other reason then the following will get it up quickly for you.

Change the Usage* to a partial name or full name of the target proxy.

$app = Get-SPServiceApplicationProxy | where {$_.TypeName -like "Usage*"}
$UP = Get-SPServiceApplicationProxy | Where {$_.ID -eq $app.Id.Guid}
$UP.Provision()