They built a computer model to try and manage the stress on the ship as they worked to free it. It was not straightforward as the ship could have broken if they weren't extremely careful. They also had divers inspecting the hull for signs of stress. This was a massive, complex operation.
It's like the guy at a bar who tells you he knows how to swordfight after doing fencing. I'm sure he's right but it just funny from an official with experience basically saying "it wasn't that hard."
Boskalis is the company who brought the tugboats, engineers, diggers and whatnot over there in days. This is not a random guy commenting. This is an end-boss in charge of the entire operation.
They brought over a few tugs, but the large majority were Egyptian. Not belittling Boskalis' work in the operation, but don't think that the Egyptians don't understand maritime operations in the canal.
And I'm guessing that the operation was overseen by the Suez Canal administration, not Boskalis. Not saying that there wasn't delegation, but I'm guessing a joint management operation between the canal, the ship's management, the salvage operator and the local ship captains.
I'm sorry if it sounded like Boskalis "saved the day". I was trying to make the point that his is not a random internet person commenting on stuff. Not trying to imply that he's the one running the entire operation.
Can you image if the hull did weaken to the point of near failure? They might have needed to offload everything right there where it ran aground, lest it completely fail uncontrolled. The canal would be closed for a very long time. Luckily they didn't have to make that call.
The beauty of steel is that it will yield plastically beyond its normal design stress. It would have been possible for them to damage the ship to the point where it required significant repairs but still be capable of exiting the canal.
Luckily, indeed — but they were already planning for this contingency. Apparently (and unsurprisingly) it was going to be hard to find a large enough crane to move the containers.