Even minus explosives, getting a grounded megaship unstuck can be impossible. The one in Suez displaces 220,000 TONS, almost double a USN CVN.
When something that massive, even moving slowly, leaves the channel and hits a bank, it wants to keep going, digging way way in.
There is a Korean Ro/Ro car carrier stuck in Brunswick GA for about a year. Fortunately, it’s not blocking the channel. It went aground, and had to be cut into sections to be removed, with a giant “chain saw” around the hull, like that Italian cruise liner.
Not to mention if they sent in 3 or 5 or 10 of these one right after another. A canal can be blocked for basically forever.