Hi guys, I am currently on the old $69 plan with my pre, and can't wait to pick up the 3D on Friday. I went into my local sprint store and asked a rep whether returning the 3D within the grace period would revert me back to my old plan. He said that while I would be off contact, the $10 extra charge would stick with me. Does anyone know if this is true? Sounds a bit fishy to me. thanks!