two options, note that the required withdrawl times are met and if the vet or you gave a stronger than prescibed dose,wait even longer.
1. sell rail grade right to slaughter...we do this if we think it will not handle the sale barn, and the ruck ride to where ever. The inspector looks at the animal and either gives it the thumbs up, or condems part or all
2. if he is fevered and or can not make it to the withdrawl time without pain or suffering, the 5 cent cure is best.
When we have a situation like this and the sale barn might be an option, our decision is based on, will he walk off the truck willingly at the sale barn? Will he walk into the ring looking good? Will he make the truck ride to his final destination and walk off willingly? For us, we have a slaughter house you can book into several weeks in advance. It's two hours away. The next best place is 15 hours in 3 of the 4 directions. Add that into you decision and you will have your answer.