Question about quitting and getting home after notice given?

I ended up taking that load and then he wanted me to sit a day to wait on the backhaul so I said I'll just drive back empty and pay the fuel. He threatened to charge me for lost revenue. I ended up taking another driver's load instead. I've always been a firm believer in giving plenty of notice when quitting a job but I think in trucking the best thing to do is quit when ur able clean out out ur truck right then and there. Otherwise if u quit while on the road you are still under orders from ur boss. I understand my boss had orders to fill but when I'm done with something I'm done and ready to leave immediately which is why I was a little perturbed. Bad part about this is the revenue I made in the 2 days doesnt even cover the extra charge for my plane ticket. But anyway I cleaned the truck out and am sitting at the airport enjoying a moose drool before my flight. I guess I'll just have to wait and see if I get my last paycheck.