To put it succiently, 1. Cut down expenses, right now and ruthlessly. Negotiate with everyone on everything. Everything is open for negotiation.
2. Economic stress WILL KILL creativity. Your only focus right now should be get to positive cash flow. Not debt free but positive cash flow. Debt free will take time, but it will happen but what you need absolutely right now is +ve cash flow. Debt is ok as long as you meet minimum commitments. -ve cash flow will lead to economic stress which will kill creativity which will make it longer to go debt free.
3. Plan for Cash flow positive. On paper - In writing - Get someone to proofread.
4. If you are not able to get cash flow positive - get a consulting assignment or a job. START LOOKING RIGHT NOW.
5. If you are able to get to cash flow positive - look at your existing ideas-business lines and pick out the one which will create revenue fastest with the most amount of confidence. Work on it, and leave everything else for a while.
6. Don't go back to school. You know that is not a solution. There was a reason why you crossed into the free world.