The cheapest (and quickest, but far from easiest) fix at this point is to jut do your best to drain it yourself. As Caddyman said, wind a tube down there, and drain it as best you can.
After the drain, if you're really brave (and know something about fuel systems, or have a buddy who does), you can de-pressurize the fuel system, and use the fuel pump to drain the lines. That may take a while to complete. However, it MAY damage the fuel pump and filter, but it may also protect the rest of the engine (injectors, primarily).
As long as you don't run it, the damage that's done is already done, there's nothing you can do to stop that. You can only protect what's left.
Find a buddy with a car capable of running E85, and dump it in his vehicle. He'll be grateful for 10 gallons of free gas, and you get a place to get rid of it. His car will run just fine on that mix.
When you've got it as drained as far as you can get it, fill it (from cans, so as not to run it yet) all the way with regular. That way the mix is as lean as you can make it.
Fire it up, and hope for the best.
That's roughly what your mechanic will do, anyway, except he may also want to change lots of parts that haven't failed yet (I try and consider honesty levels). It's likely, at this point, nothing's hurt, so you should be OK.
Best of luck,