Justin, this issue has caused myself and the other SD Admin at my workplace no shortage of ire. It appears that this is hard-coded functionality of the ProcessManager. As of SD 7 MR2, that feature (ForwardToNextTask) can't be modified, aside from increasing the delay.
Setting the delay to either 0 or above 100 (In Admin > Portal > Master Settings > Report Settings > SuggestNextProcessID) sets it to the default. We have it set to 10 seconds.
I would suggest (and I've brought this up during service request calls with Symantec) that this feature be modifiable in future revisions. I understand why it's there, but an administrator should be able to turn it off.