I can't see those pictures from work, so I'll just have to imagine what it looks like and see it later when I get home. :) You could still probably use the basic bottle baffle technique--there is a stickied article in the Betta Habitats secton on how to do it. You may have to use a little more tape and elbow grease to get it to work well with your spray bar, but you should be able to get it to work if you mess with it.
You could also wrap some filter media around the spray bar and tie it on with some fishing line. Be careful about what materials you use, though, sponges meant for cleaning and doing dishes often have chemicals on them that make them unsuitable for aquarium use. Algae scrubber pads and filter inserts will work, though.