Our mortgage is a 30 year fixed at 6.375. we closed on our house in september of 07.?

we got an fha loan and the mortgage holder provided $5000 for us for closing costs. we don't have to pay that money back as long as we live in our house for 9 years. with the economy like it is and the stimulus package, can we refinance at a much lower rate and at the new value of our home (the value has dropped almost $20k)? i know that if we do this, we would have to roll in the $5000, but it would be worth it.