Yeah, that's how I see it. Cohen was privy to a lot of Trump sausage-making over the last several years. That's why I expect Trump to do something desperate soon. At that moment, the GOP are going to be put in a serious quandary. Trump's desperation is going to signal that he's trying to hide some serious shit. At that moment they have to fold or raise.
Mueller has Trump in a fork: he can either sacrifice his rook and throw his full weight at dealing with whatever revelations Cohen has about Trump's finances, or he can sacrifice his queen and throw his full weight at the Russia investigation. He can't divide and conquer: it's clear that the Trump administration is already over capacity with bimbo eruptions and the dike now has two big holes in it. It's starting to look like encirclement. I hope I'm right.