1 or 2 Base Award?

[insatty]

Greymule: Which rule(s) "specifically covers" the original play?

I have been researching this since Childress's article and still think that the batter-runner unintentionally deflected a legal pitch into DBT resulting in a one-base award. 8.3.3l does not cover this situation as one post argued. Childress is absolutely certain that the rules specify a two-base award, and I accept his interpretation as an "authoritative opinion." But I am curious as to Childress's sources, which he has blithely not cited in his two posted replies.