Finally got around to dealing with the bent handlebars, two years later. Yes, I've been riding with them bent but it's a sidecar rig and the only passenger is the dog and we only ride around this tiny hamlet we live in. Plus, the bike has had starting issues so it hasn't been ridden in nearly a year. So, time to deal with all this crap and get' her back on the road -- the dog isn't getting any younger.
Here's how I finally did this. Unless you're bike has a sidecar frame attached, make sure you have it tied down very good and the front wheel is chocked, because you're going to have to put a lot of torque on one side of the bar to get it to bend. I was surprised how much force it took.
Short story --
1) Get a long stiff breaker bar and use zip ties to position it below the bar that you want to bend downward.
2) Get some large hose clamps and clamp breaker bar to the handlebar.
3) Find something to support the opposite bar roughly parallel to the ground. I used a Harbor Freight roller stand but I probably would have been better off building something stronger wiith 2X4s since this HF thing is a piece of crap and wasn't really sturdy enough. Also, find a way to distribute the force between all the bits that touch the support instead of having all the torque concentrated at one point.
4) Make sure the front end isn't going to rotate when you apply the downward force. I used a long 2X4 between the fork tubes to neutralize that torque moment.
5) Push down on the breaker as necessary to bend the handlebar and check the system each time you do it because the breaker bar will shift around the handlebar. I had to adjust it three or four times.
It took a lot more pushing that I thought'd be necessary but it did bend back and appears to be fine. We'll see after I give it a ride once I get the starter issue sorted.