Small sample size is the only thing I can say.
He needs to go because he's a malcontent whiner. But I don't want Rizzo dealing two closers out of desperation.
If he can get a decent second baseman out of the deal, then sell high on Escobar, now we're talking. But no desperation moves. Better to keep him and shop him closer to the deadline.
I can't remember who did it, fangraphs maybe, but somebody dug into the numbers to see how Storen performs in high leverage situations, really number crunching, big data deal, and he graded out as we would have expected, as a guy who pitches substantially better when he's comfortable, with a solid lead, and not a lot of stress, and that he gets substantially worse, much worse, as the situation becomes more fraught with tension. It was large sample size, plenty of #'s, and it graded out very negatively. Wish I could remember where I saw the article, but it isn't small sample size based on that guys research.
I wouldn't kick him to the curb if we could bring him back, no doubt, I'd retain him, we'd get nothing for him at this point after all, but I'd also never use him again in high leverage situations that really, really matter, October style, late September style, that ship has sailed.