Rehaired the bow and now I don't know my own hands

Took the bow in on Monday, got it back this morning with fresh hair that grabs the string almost too eagerly. The relief came fast — but then it curdled into this unnamed restlessness, the same feeling I had after turning down the quartet. I keep telling myself the bow is fine now, the instrument is fine, which means the problem is somewhere between my shoulder and my knuckles, and I'm not sure I want to look there.