Just got back from the park, was going to do some FPV.

Everything looked good, lifted off, corrected for a bit of lean to the rear, it got worse, corrected more, hit full forward and quad continued to accelerate in reverse, killed throttle and rolled it breaking a prop. 

New prop, lifted off and it started again. This time all that air time training I've got with my new Hubsan X4 kicked in and I flew it backwards and landed it. 

At first I thought my radio config got hosed, then I remembered that I've been finishing building my flying wing. Checked the radio and sure enough, it was set to "Slinger". Set the radio back to UFO, and my quad flew fine. Another item for the pre-flight. DOH!