Force rendering in the default theme

When using a separate admin theme, TOC filter may render its output using the admin theme, rather than the default theme, depending on where the node was edited from. For example, if you view the node and click the "Edit" tab, the filter output will use the default theme. If you edit the node via /admin/content it will use the admin theme. This also applies if you manually head to /node/1/edit?destination=admin/content. This becomes problematic if your default theme overrides theme_toc_filter(). The default output from that function is cached in the node body, rather than rendering the output from the overridden theme function.

Is it possible to force TOC Filter to render via a specific theme? Similar to how modules like mimemail handle this. I guess the alternative would be to disabled caching on the text filter, but that is less than ideal.