http://online.wsj.com/article/SB10001424052970203315804577209511653273618.html
Having trouble distinguishing singulars from plurals, Mark? Birotte allegedly said there was insufficient evidence. That is a singular. Assistants recommended filing charges. That is a plural. Given that a large number of agents worked on this case, and a recommendation would require at least a majority (no, I didn't say in harmony; that is you, trying to read into my post what you want to criticize me for), I think a reasonable interpretation of such stories is “many”.
Note that by "appeared" I did not mean "emerged". I meant "seemed", as in, "it seems" that many anonymous sources have said there was sufficient evidence to file criminal charges. This is basically what the WSJ said. Ironic that you didn't understand this, given that in your quote above, you yourself use the word "appears" in the same sense.
Now maybe your point is that there is only one source claiming that these agents recommended filing charges. When I said many sources, I was treating the agents as sources. Maybe you have a problem with that. But that WSJ source is still claiming that several, many, however you want to describe it, agents felt there was enough evidence, vs. one Birotte. And as I noted in my other points, which you didn't address, there are several reasons for finding this information more credible than what Birotte allegedly said.