[Plugin: WordPress MU Domain Mapping] Remove limitations on remote login

Is there a way to remove the limitations on remote login? By this I mean, when the admin area is set to use the mapped domain, then remote login doesn’t work. When it is set to use the original domain remote login can be enable for a solid single sign on.

Is there a way to remove the limitation? I ask because I’m trying to use a plugin on a subsite that allows front-end posting and uses TinyMCE with the media uploader. It calls these from /wp-admin. They load fine when the admin area is set to use the mapped domain (thus losing remote login functionality), but when the admin is set to use the original domain (I am using a subdomain install) it causes problems with the calls to /wp-admin and the media uploader fails to load properly.

Is it possible to disable the limitation, or better yet, put a code snippet into functions.php to help make things work? The best scenario I’m looking for is to maintain that nice Single-Sign-On while having all those calls into /wp-admin to get TinyMCE and the media uploader work perfectly.

http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/