Not to rain on anyone's parade, but a search of
court cases for the Texas Western District Federal court for Copeland and ATF or just Copeland returns zero results. I also can't find a single legitimate news outlet that reported the story, including the Austin Statesman. A search for ATF at the District Court site returns numerous hits, most recently a case dated 3/11/2010 and styled
PETER MORALES vs. LT. MARTIN. I'm thinking this story is either bogus or a lot of the details are wrong.
EDIT: There's also are no press releases
in 2010 matching the details of this supposed case. There is also only one press release
in 2009 that matches in very broad detail, the description of this case. Without something more definitive than blog posts and a radio station story, I'd say this story is bogus.
EDIT2: There's also no press release on
the ATF site, and there are zero hits using the advanced search feature to find mentions of "Paul Copeland".