Yep, I think your right. The problem is what happens to pending commissions if I change by agency. As I've heard, you lose them if you contract with somebody else. I may be wrong hopefully.
If you have assigned commissions to the agency (which is likely) then they will keep them, if you are paid directly then they are yours. You won't be able to move unless you stop writing business for a carrier for a minimum of 6 months so, if you stopped writing any business for Humana right now you would be able to go direct in November even if you wrote something yesterday.
You should really take a long and hard look at what you are doing, it seems to me, from the very limited information in front of me, that your business model is highly flawed and needs revision.