Shot in timeline strangely stretched
 

Hi
Sorry another urgent request on deadline! One of the shots in my timeline is looking strangely stretched - wider or perhaps diagonal. Shots around it are not affected. Don't know what i did (someone else messed with my timeline previously so could possibly have been them). Found this in another shot and did messy workaround cutting and pasting from another version of project - when I tried to cut odd shot wouldn't go away and had to try several diferent things. What could be going on? I don't have any effects on it apart from color corrector three way.

PS actually the shot was fine yesterday - don't know what I did (sorry brain fried).

Update: Solved it. Shot was scaled up and distorted (must have leaned on some keys, not great to work when you're tired...)