Here are the en banc stage materials in United States v. Abouselman:
En Banc Petition
Order Denying Petition for Rehearing
Panel materials here.
Here is the opinion in United States v. Abouselman.
Briefs and lower court materials here.
Here is the unpublished opinion in Hackford v. State of Utah:
This Hackford has been before the Tenth Circuit several times before, here, here, and here.