Using OC_Template for errors in *.config.php files

I wrote a custom *.config.php file, and I want to return errors in a more graceful way using OC_Template. However, OC_Template requires \OC\Server to be loaded, and \OC\Server requires . . . \OC\Config. Yeah. I tried simply including the error.php template, but that requires LazyL10N, and that requires this, that, and the other.

Without writing my own error template, is there a way to use the existing templates from a custom *.config.php?

well a config file is supposed to provide config and not serve custom logic

sounds like this is too much of a stretch, overcoming those problems will be hard to impossible