They actually had a good reason for doing this, BTW. I think I mentioned it earlier, but this was intentional, because they wanted the DI out to have a tubey tone... ALMOST like a cab simulator in a way, to get more of a sound as it comes from the output of the head to the cab, as opposed to dry from the bass.
This could open up a huge debate, but the simple fact is, IMHO, it sounded great. I also understand why they put it after the master control... to get more of the "tubey output" sound, but again, that meant that I could not independently adjust stage volume without hitting FOH, which I eventually couldn't live with.
In other words, good tonal idea, just bad in practice... IMHO...
Those with more disciplined stage environments than I have would not have this issue.