Theme issues

This may be a bug (given other theming posts here) or it could be an issue that has a workaround.

I have a site-wide default theme and a specific custom theme for showing large Views tables. I use the Page Theme module to assign that special custom theme on specific pages, in this case specifically to the primary views host table and a small views table the Megarow calls and displays in-situ. However, the Megarow, once opened, shows a combination of site theme and the theme assigned to it and breaks the host view theme. The net result is that submit buttons revert to the site style and all text boxes (for editable fields) in the entire view and Megarow get assigned a tiny height (or padding is too big) resulting in narrow slits for editing text boxes.

Tracking this down in Chrome's inspect/CSS tools, I can't find the root cause as there doesn't seem to be a clear CSS directive that's doing this. It looks like it may be a computed CSS result.

Is there a way to override the theme the Megarow uses so that I can force a correction? I could use JQuery to force the height of my input fields, but that would be a dirty hack that doesn't address the underlying issue.

Any thoughts/suggestions? Any assistance is very welcome as this issue is making my project unusable.