My key is locked in ignation and car refuses to start I can't even Move the gear-shift

I have a 2002 Chevy Trailblazer. I have been having problems with my driver side running light for the last 6 months or so. I get it fixed and it always dies out after two weeks. I want you to know this so you will understand there is a wiring issue. Yesterday while I was at a light, I turned the engine off, as I do when my reduce power light comes on, to reset it, I can not remember if I put it in park first, I do this this turning the engine off because of the fan assembly causing the reduce engine power to kick in and turning the car off usually re-sets it. Well unfortunately when I went to re-start the car, nothing, couldn't even turn the key, move my gear-shift, locked completely. A man stopped to help me jump my car, nothing, he then hooked the red jumper to the fuse box, I got power back again, battery gauge listed fine, key would turn, but the engine would not start, I got the clicking, and hum of fuel pump just would not turn over engine, when he removed the cable, locked again, nothing, I had to get the car towed, and I have no idea what to do now. The battery is less than 8 months old, replaced fuel pump less than a year ago, trannie has been replaced 2years ago, if that helps. I did get a blown fuse in the back seat fuse box the night before, the fuse sparked (Rear fog)when I tried to replace it so I just left it blank. Any suggestions would help I have spent all day researching, I can't afford too much, just got laid off, and lost my place, I am staying at a remote 2nd house of a friend, my car is all I got, please help, thanks!