Today's scheduled stop (westbound) was to be a brief one, but when its departure was advanced from 10:30 to 12:00 and then it did not sail for more than an hour, it was apparent that there was more work involved than planned.
As it pulled clear of Halterm there certainly was evidence of the "deformation" of containers mentioned in the casualty report. Since the ship is westbound from Iceland to Halifax and on to Portland, I presume those damaged boxes will be dealt with in Portland. The Halifax stop normally involves unloading a few Eimskip containers, and perhaps picking up some empties.
Eimskip also operates a dedicated shuttle service from Halifax to and from New England for CMA CGM, so those boxes would have been loaded in Halifax. Export boxes from Halifax for Iceland would normally be picked up on the eastbound leg.