Need another option so we have:
  1. Remove from current workflow
  2. Another workflows - specifies workflows you want to remove from
  3. All workflows except current workflow
  4. All workflows
  5. All workflows except current and specified.
Number 2 you need to come back and add extra workflows as they are created.
Number 5 would allow you to remove from all workflows but keep in ones you specify, e.g. a long term nurture.