If you know anyone from the Pittsburgh area who routinely drops the words “to be” from their speech — as in this grammatical conundrum needs clarified — you might find this article from Jan Freeman illuminating.
She does, however, reach this interesting conclusion:
But much as we hate to hear it, said Zwicky, there are lots of usage features whose existence we simply can’t explain. When Pittsburgher Jim Heinrich says of his native needs washed, “I don’t understand why it would be so horrendous,” the answer is simple: It wouldn’t be horrendous if more of us happened to use it.
I can tell you it’s distracting for an editor when your production coordinator routinely sends e-mails that say, “This needs edited.” But then, these words of wisdom:
So if you think Pittsburgh’s grammar needs corrected, consider the alternative: Maybe the majority’s attitude needs adjusted.