A320/A330 will give LAND ASAP and B757 QRH states plan to land at nearest suitable airport.
In my company we were not encouraged to even consider dumping on the A330 for an engine failure, and certainly not encouraged to take up the hold to burn fuel in the A320.
Now recently on B757 and still not encouraged to lower landing weight prior to making approach.
Don't know about Onur SOP's. But maybe he wanted to hold to secure the engine etc.... but rightly thought he would burn more fuel at a lower alt whilst doing so (2 birds with one stone).
Anyhow, looks like job well done.