In fairness to the dealership I find oil sump plugs do tend to bind even when tightened with my own torque wrench. I often find the next time I come to remove it, it takes an ungodly effort to free it up. On my wife's Honda I was starting to think it was part of the aluminum casting rather than the actual bolt it took such an effort to free it. I think the trick is to have a proper wrench rather than a socket set and to give it a good shock with a hammer, the looseness of a socket set seems to just absorb the shock
I don't know if Fram still sells the "sure drain" any more, I installed one on my LR and it's great, you simply remove a cap and screw on a hose that opens a valve and presto the oil comes out, albeit rather slowly. This way I don't even need a drain pan I just put the hose directly into a waste oil container.