Interesting further (unsubstantiated) but credible postings on the PIA History forum (on which our departed friend is still insisting that CTLs are flown as teardrops with radar available).
These postings come from a Pakistani who is working in Hobart as CFI but presumably has good links back to Airblue and home.
He says that Islamabad approach saw the track and asked tower to send the AB back to him twice. On each occasion the AB replied that they were 'visual' and remained on tower.
He says the CVR and FDR were decoded a while back and are back in P but the CAA is not expected to release them, citing only 'Pilot Error'.
He repeats the '180 degrees plus' heading input which reversed the turn. (NB One supposed AB qualified poster here said that was not possible - jury out)
He interestingly describes the avoidance manoeuvre flown as the "third g/a for that aircraft" and "more than on attempt to land" with no further explanation.
The puzzle goes on. I suspect we will have to work on leaks.