I certainly agree it was a mistake to move the offices to West Chester. The building on Curtis was perfectly fine.
They are no doubt stuck in a very long term and expensive lease. I tend to think that part of the move was generated by some disagreement between Wainscott and city officials when the lockout occurred in 2005. I recall some city officials choosing sides in the dispute. It was right after that hen the announcement was made they would be moving.
No idea about the trucking within the plant. It would seem any decision to do something in-house versus a contractor would be driven by financial considerations, i.e., which is less expensive.