"Having a jounro in court saying 'A big boy told me it was posbile' doesnt cut it."
That depends on how the story was reported. If Bloomberg reported (as I think that they did, but can't be bothered to read the piece again) that "According to Big Boys, the boards were compromised" then they're legally on safe ground, as they correctly reported that somebody else told them something. Whether or not what the somebody else said is correct doesn't really enter into it (unless a "reasonable person" should have known that they were being told bullshit).
If, however, Bloomberg reported that they were in possession of evidence that they weren't in possession of -- in other words, that they knowingly lied -- then they are in legal jeopardy.