It looks like your flash is being used as fill to me and that the ratio isn't high enough (to much fill). The sun isn't far enough behind the subjects to be accent and looks to be the main light.
I think that's more or less what I just said. The CL-180 could probably have been backed off a little, but I did want to pop UZI relative to the background.
It would have been ideal to have the sun a bit more around in back but the path was were it was and UZI was an impatient subject. After about three tries he was ready to go do something else.