What you may consider a hammer and what the pros use is far different. I bent the front wheel in a similar manner in Death Valley and took it to the Motorcycle Tire Center in Las Vegas the next day. They pulled the wheel off the bike, straitened it, checked for true in both axises and put it back on the bike in an hour. That was 40k miles ago and I've had zero issues with it. They had a lead block formed for moto wheels and a very large lead hammer.
http://www.mtclv.com/
Some places you might look in to:
http://www.motorcycle-wheelrepair.com/
http://www.rimspec.com/detroit-michigan-car-and-motorcycle-wheel-repair/
Google 'motorcycle wheel repair, Michigan' and lots more come up. Call a couple moto shops in your area and ask them about who they go to for wheel repair too. My repair was worse than yours before I used some rocks to bang it in so it would hold air. Motorcycle Tire Center charged me ~$40 to repair it and didn't need to un-lace the wheel.