Well what I think happened is that you may have deleted the connection between the input and the output (or perhaps something relating to the "crossbar") while deleting the DSP components... If you disable on the DSP's that is essentially the same as removing the unneeded ones. I suggest just staying there, as you are accomplishing the goal of bypassing extraneous processing. The sound quality difference, if any, between disabling the DSPs and having them enabled should be quite small unless reverb or chorus were not at 0. The difference between disabling and removing the DSPs is theoretically 0.