Simplify / fix backup scripts

Worth noting that `-s` does not always cause action to happen synchronously as expected.  For example, the operation may complete but the service may not actually be disabled yet.  That's probably why the sleep loop existed below.

In practice, the script will likely exit at this point.  Maybe it would be good to add the loop back but have it could the number of sleeps and complain after 5 or 10?