No one likes to be double-teamed. However, Dems would be wise to consider just how much they want to "neutralize" Clinton-42, especially if Hillary ends up with the nomination. The GOP are certainly afraid of him - right talk radio is avidly - no, desperately - pushing the "Wild Bill" theme. He's effective.
As far as those saying that confrontation weakens the Democrats, I don't agree, wholly. The candidates need to be vetted. The Press - "the process" - is NOT going to do it, altogether. The GOP are going to do all they can, anyway (and probably many on the Democratic side who meet fire with fire).
Get the "warts" out there. Maybe not at the first, maybe not in the last 24 hours before a vote, but get the "bad news" out there.
There is an old saying, "Bad news doesn't get better with time." If someone was pushing Kerry during the nomination process, his campaign might have been "ready" instead of slack, when the attacks came on him.
That is the great hope of confrontation, afterall, the positive value to conflict. Sure, there are negative aspects to be managed, but we're at the point with the media repeating the "story" that it is getting carried away.