Bad planning on my part, I suppose, but the travel I have booked up to the end of my membership year at the moment is going to net me 585 tp

Most of this at the moment is domestic US travel but I do have a return PHL-LHR journey in the itinerary for late May. At the moment this is booked out in WT, return in WT+ thanks to a POUG offer for the return sector. I suspect this is may be asking the impossible, but does anyone have any idea what the chances might be of a POUG also opening up for the outward sector (BA66 on 21 May if that's of any consequence)? If one does then I'll be biting BA's hand off to take it...