Even if Horowitz initial thoughts were to white wash his investigation like he did Fast and Furious perhaps Mr. Rogers over at NSA suggested something different based on what they had found.
Kind of like “sir, you may want to stop over and take a look at a few things that have surfaced...”
It makes it hard to cover up a conspiracy when you know others have dirt you can’t hide. IMHO self preservation kicks it...Hey they are crooks, I aint going down with them type thinking.
Or he’s back to the original Clinton Defense plan...release a little dirt every week instead of a Dump truck load all at once to lessen the effect of shock to the public. Then trot out the “that’s old news” spew.
Those are both viable alternative views of the IOG probe....