avital 5303l remote start

Hey guys, i'm back.

I just had a VERY starnge thing happen. I was on my way home from work, just picked up a pizza, and was about 2 miles from home. My wife called all freaked out. "Honey, you have a problem. The car just started....all by it's self !"  I got home 30 seconds later, went into the garage, and sure enough, i could smell exhaust fumes. The keys are for the car are sitting on the passenger side seat, and the remotes are hanging up on thye key holder we have mounted on the wall. I felt the exhaust manifold and it was only slightly warm, so i'm figuring it only ran for maybe less than 1 minute.

I was finishing the install yesterday, and got into the programming the unlock button for a DOUBLE PULSE UNLOCK. Could I have changed something from the default setting ? it did take me a few tries to figure out how to get into certain sections of the menu by using the VALET SWITCH. I know some alarms with remote start have a feature that will start the car if the tempature falls below a certain tempature, but I'm not sure if this alarm has that feature. It is cold today, but only a low of 50-55 degrees. 

I have the fuse to the pulled out from the car battery, because I'm not taking any chances on this car starting while were sleeping or gone for the day while at work.

Any ideas on why this happend would be great. And thanks again for your replies.