So are we saying they physically can’t dump or they don’t actually need to ?

Surely if they can dump, then why not in this case fly out over the Atlantic, dump the required load and get the thing back on the ground, saving a plane load of anxious passengers a 3 hour ordeal in the air ?

They do not have a fuel dump facility.

The aircraft noted can land with the load they take off with. Therefore there is no need for a fuel dump system. I beleive this also helps save weight.

In this case, I think they circled because they knew they had a burst tire and did not want burdon the remaining tires with the full load they had