Has anyone had an infestation and had their plant live to tell the tale?

There's way too many of them to treat, from what I can tell. I did prune it severely to get rid of the worst sections, but I've read that the adults are pretty hardy against insecticides due to their waxy coating.

I've had scale on other plants but not euonymus. Below is a link to some treatments that you might take a look at(scroll down a bit once you open the page). If you have a sprayer the job might not be too difficult. I've used the alcohol/soap mixture to some success on potted palms.

Good luck