By doing so, the reporters would be verbalizing the contents of said affidavit -- I think, actually, they were your words when we had the telephone conference -- by testifying as to what appears in the newspaper article or articles, unless such affidavit is otherwise accepted by all parties as validating and authenticating the contents of the newspaper article or articles in issue. Meaning if they accept it, it becomes moot.
If the reporters do something that is unspoken i this text, that means they are speaking about the contents of the affidavit.
It's true, "by doing so" refers to something spoken about before this text
( z1 have-condition :ARG1 ( z2 speak :ARG0 ( z3 person :ARG0-of ( z4 report ) ) :ARG1 ( z5 thing :ARG1-of ( z6 contain :ARG0 ( z7 affidavit ) ) ) ) :ARG2 ( z8 do :ARG0 z3 :ARG1 ( z9 something :ARG1-of ( z10 speak :polarity - :location ( z11 text :mod ( z12 this ) ) ) ) ) )