Hello Scott,
in the Properties of the Swimlane, under the Advanced section (this is the last section), there is a property to Include Self: True/False. If you set it to False, than the Originator should be excluded from the list of people receiving the approval assignment. In the below printscreen I used TeamFromRole type swimlane, where the resolver group comes from y Data Connection pointing to the Originator user group.

I hope this helps, let me know the result.
Best regards,
Zoltán Dobszai
Novacon
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Zoltan Dobszai
Novacon Zrt.
Törökbálint
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