Just a heads up, as of my comment, this is not endorsed by PHP as a migration for the patch.
I shut down my servers five hours ago. This might have seemed premature at the time.
I think the best course of advice for most people is to shut down their servers as soon as they possibly can.
Are you speaking officially here?
There are various mitigations suggested online, including completely blocking multipart requests at LB level. Is the combination of both effective?
I don't think pulling mitigations from random users online during a developing situation is a good idea. I think shutting down ones PHP services for the time being is a very good idea if that's an option.