Imagine how difficult it would be to actually plan this. You'd have to be able to hack the ship and kill its power at exactly the right time. Meaning you'd have to have calculated when to kill the power given the weight of the ship, its then-current speed, the force of the current, winds, the effect deploying the anchor would've had, etc. There's a fuckload of factors that are highly variable that would've had to go into that calculation. The much much much much much much much much likelier explanation is that because of basic industry incentives they were going too long without properly repairing or replacing critical systems and the ship's power went out as a result and it really in fact just so happened to occur this time at the worst possible time.
On another note, imagine Zeus's reaction if we just let 20 unvetted foreign nationals (who in his mind are probably connected to international terrorism) into the country to hang out for two years while this all got investigated.