I'm not sure exactly what your question is, but here is a link I keep on hand in case I am faced with this issue in one of my chickens. It discusses impacted versus sour crop, and how to treat each of these. You will also find a wealth of information if you search this site. Good luck to you. http://www.poultry.allotment.org.uk/Chicken_a/chicken-crop/index.php
BTW - It is normal for a crop to enlarge during the day, but it should empty during the night. If your roo's crop looks emptied and not enlarged in the morning, he may not be experiencing any crop issues, and that would explain why he continues to eat. Did you notice if it is still enlarged in the morning?