Okay... well if anyone needs to disable this because it is broke, here is how you do it.
1) In SD.ProjectManagement, go to the Initial Diagnosis properties, interaction Setup. Select Assign To Me in the Dialog Model listing. Click on Edit (Screen shot #1)
2) Click on the ... at the end of "Conditional Use Model" (Screen Shot #2)
3) We want to disable "Is this a SubTask" (Screen Shot #3) to True (Screen Shot #4). Makes it easier to flip back if this is ever corrected.
Hope this helps anyone else that needs to disable this guy.