Wow, what a most excellent photo! You've got action, interest, and even right angles! That square in the middle is also really cool. I rate this one a 10, I hope you get a ribbon!
Just the right amount of motion blur here. It would have been nice if the man's hair could be distinguished from the background, although the lighting may have been beyond your control. I don't care for the gratuitous use of "right angles" in the title, and the borders detract rather than add to this photo.
At first I didn't like the blur with the falling chunk of wall, but it does help indicate movement. The huge white area of wall is also a little distracting. But, I know how difficult it is to get a photo like this when everything is moving around you, so I am going to give the score a difficult boost. The tonality of the worker is excellent. Get rid of the part of the lower wall and the right angles and texture of the worker will probably stand out more.
nice shot. i like the border use and the caught motion. good sepia use too. i love the wall, but i think it'd be nice if more of the top of the picture was brought into the frame.