<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by LemonThrower:
What I wanted to know is whether they are within their rights to change the routing to one on their metal that is less convenient for me if there is a more convenient one available on someone else's metal. </font>
Yes. Without a doubt they can. This is not unique to DL but fairly standard to most US carriers.