Facts:
The Contract for the Airbus Shuttle is not renewed, 2 A319 going back to lessor end of Q1 2008.
PTI only recruits FOs, except in the case of rapid expansion and lack of suitable FOs for upgrade. This is not the case for the moment, certainly with 2 airplanes leaving the fleet.
LH has no plans to operate long haul full business class flights themselves, at least for a couple of years. The DUS-EWR and ORD will switch to LH A340 next year but the PTI A319 will go somewhere else.