Well, it's a stupid me! Looked at the bike, noticed a different rear tire (inflated), and thought I need to check it before riding. Needed to charge the battery (1st of each month).
I had to fill a very low tire on the car, so pulled out my 12v compressor, and went over the car.
Comes 2 weeks later, promise of a dry Tues afternoon on our local GW meeting night, figured a great chance to insure the bike and get some refreshing riding close by, before throwing the wife on the back for our Sat morning breakfast meet. Would be great to show up to it actually on a MC for a change.
After work, get the insurance/plates, put them on the bike, dress and start up the bike and drive towards the parking garage gate. Bike feels funny? OHHH, did I check that rear tire? I remember using the compressor? Turn around to drive back the 10' out of the drive way, and the tire flattens out and hard to roll.
Get it back to the parking, and put the compressor on it. 0 lbs. Start it up, run it, wont inflate. Pull out the light and inspect. The rubber is off the bead! Damn! Now how to get it back on??
First, get the center stand back on the bike. Then get it in the air? What, the tire is 2" flater, it's almost impossible without a grab handle to lift it on an inflated tie, now with it flat, what will I do?
I figure look for some wood, and try to drive the bike onto it. Then if that doesn't work, pull out the scissor jack from the wife's car, under the swingarm, and lift it up enough to be able to get the feet down.
Then with the rear in the air, what then? Try to get the tire close to the rim, no holes, and try to get air into it again. But I know from experience, that no little compressor will do this, it needs a burst of air.
Solution?: I'm thinking of trying the lighter fluid trick. Spray some around the rim, and light it on fire. What? On the bike? near fuel and plastic, and other things that can burn? Is this a good idea?
I'm not really prepared to pull the rear rim yet for a tire change. I bought the bike from a MC mechanic who said he put the new tire on the rear and did the proper maintenance (I discussed that with him). But this might be the only way to get the tire to seal on the bead.
Might the CO2 type inflator be strong enough to seat the bead, or does it enter the tire slowly as it is screwed onto the valve?
Is my thinking valid, or am I screwed and need to remove the rim and get it somewhere I can use a proper 100 psi compressor to seat the tire?
Oh, and during all this, flipping the side stand down, the "activation" lever broke of the stand. Now I need to get it welded back on, or buy another stand. Seems that the IS and the std/tourer are different, but I don't know in what way. I thought they would all be the same.
And it's currently dry outside, and no bike to ride to go get a coffee.
Your thoughts? Thank you.

Moral of the story. DON'T forget to check your tire pressure? When you think something is wrong, check it.