Mistake during Oracle 11g PITR
So after working through the info that Phil gave me.. and doing some research after the fact..

It appeared that the Set Until with a future date screwed things up by "removing, or de-cataloging my backups".  Even if that's possible (I don't know enough about Oracle to say) it wasn't the case.

What had happened was that my initial Full Backups were gone due to some poor data-retention.  So when I put a future date, it appeared like my PITR would work because it had a Full backup from a day ago.  However, I never did have a Full backup from a week ago.     I had taken one a couple months ago. but it had been deleted.

I'm using EM Console for my backups and haven't yet figured out how to tell it to do incrementals every day and fulls once a week.  I'll get there though.  

Thanks for all the help.