Indeed! That's been my route out of trouble on multiple occasions.

The setup for the first time takes some effort to get it working and that first fail-over event is both panic inducing and wonderful to see when that replica becomes a primary.

Like every disaster recovery plan, the secret is to regularly test it - do not wait until it is needed as that will be when you discover some small, but critical, element has been left out and things will not work either as expected or as needed. I've also been there and done that, unfortunately more than once - some lessons need learned more than once to get through.