Wow, I have'nt heard of a glitch such as that, in particular. Since you are playing the console version of FC3, I'm very sorry to say there is most likely nothing you can do to fix this glitch, except for Start a new Story. For the ones playing the PC version it would be easier because you would be able to download a saved game right before that mission. Us console owners have it tough sometimes when we get game-ruining glitches and then have to start all the way from the begining again. I have had it happen already on my PS3, where you have to burn the drug crops with the flamethrower, the mission itself was just broken, telling me I still had to burn the same crops that were already burnt to a crisp. Then after trying every different angle on how to get past it nothing worked. I'm still worried now every time I'm playing Far Cry 3 that some strange, game-Ruining Glitch will pop out of nowhere, forcing me to start a new Story all over again. Far Cry 3 has it's fair share of bugs and glitches just like 99% of the other Video Games out there. I guess No Game is, or will ever be "perfect". Just another sometimes dissapointing realitly of the gaming world. Sorry There's no good news on the subject. I Hope you can figure your way around it, Good Luck.

Yes, the option will become available when you connect a gamepad to your PC. :)

Yes, it seems for some reason fire just wont spread at certain times(Especially when there is a whole lot going on at once, like when your surrounded by more than just a few enemies). I also play on console(PS3) and found this to be a real drag sometimes when all I want to do is go pyro on the open world, Haha... 

When I put the Gran Turismo 5 disc in my PS3 for the first time it prompts to download a patch if I want to play online, and they'r are 6 of them but my problem is it's taking 20-30 times longer to download the files than it should be, it's taking hours. I know someone has had the same problem posted in the forums, and someone posted a link for them to download the patch onto a flash drive or portable device from your PC then transfer it to your PS3, but this link will not load, it's an older version I believe. If anyone could give me any advice on this I would be very grateful, and thank you for your time.