Nathan,
You could add a microflow step after the timer. This microflow could programatically complete the DI Team Manual Trigger step. Would this accomplish what you want?
Hope that helps,
Mike
***EDIT****
As an example, I
1. Created this workflow:
2. Created this microflow to be called by the microflow step:
3. The microflow step in the workflow is configured like this:
Hope that helps you get started.
We have added boundary events. Maybe they are helpfull. See https://docs.mendix.com/refguide/workflow-boundary-events/