I just want to see the issue addressed, regardless of the method. The 30 minute lockout is simply crap... But I do see the opposite side of the problem as well, which is being able to cast doubles and triples while being totally immune to damage ourselves. This would not go over well with the rest of the AO community.
A reduction of the Offensive/Defensive Focus from 30 minutes to 5 minutes would address the problem... as would your idea for a nano program (call it "Focus Erasure") with a long cast time. Even simply allowing the Battlestation's Decontamination Room remove the Offensive or Defensive Focus lockout the way it does most other programs in our NCUs would be step in the right direction... but personally I think the best solution would be that Offensive and Defensive Focus should terminate upon zoning.
I changed the text regarding Offensive and Defensive Focus in the Wishlist... something really needs to be done.