1. Go to the thread (any page will do).
2. In the gray bar, click "Search Thread".
3. In the dialog box, click "Advanced Search". This should open a new page.
4. In "User Name:" enter "Warriorbird".
5. In "Find Posts:" select "A Year Ago".
6. In "Show Results as:" select "Posts".
7. Click "Search Now".
There is unfortunately not much granularity in the Find Posts box. Ideally you could enter a specific date. Thanks a lot, Obama.
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An alternative and probably superior plan...
1. Go to this page.
Hasta pronto, porque la vida no termina aqui...
America, stop pushing. I know what I'm doing.