40a ; "Massage joint, ignoring back, using hand evenly" (5)
I have ?T?AD. I think of "stand back" as possibly meaning ignoring. This leaves stand as the solution but I would welcome confirmation or help.
Glad I could help, Truron. I think the Spectator puzzles are not quite as tricky as they used to be, nor quite as satisfying as they used to be (those might be connected!).