Getting rid of Super User Mess

Hi,

I have WP 3.3 installed with multiuser enabled. I have been importing in XML files from single blogs. Now that I’m done, there is a mess with Super Users. When the blogs were single – WP used to require admin as the initial ID and later switched to something that is more convenient (LPH) for me.

OLD WP BLOGS

So the old admin would use my gmail.com account.

NEW WP BLOGS

Use LPH as superadmin and would use my gmail.com account.

Now I have a problem because you cannot have the same email account used twice. To make things worse, I want to use a WP-XenForo bridge to handle users. Now the userIDs don’t match up at all !

How can I delete the admin SuperAdmins and just use LPH? I get the error message that admin cannot be deleted.

I hope that is clear.