I guess what I'm saying is that given the past interpretation of our contract by the company. Unless the contract actually says something like "No pilot will be required to be scheduled for any event, i.e. training, or no pilot will be required to work more than 4 days without 1 calender day off."
The company will say that because you are not on a trip they can use you for 5 days.
Honestly this is probably a moot point. They'll just DH you on day 1 and out on day 4.