Does Russia have the ability or even surviving men with the skill to remove them?

Well, there is one way to prevent it. Russian cops will have to stop every single truck in the country for in-depth searches, constantly. Just grind the economy to a halt. Simple.

Definitely seems like something that would have been left booby-trapped.

You make a strong argument.

The one ship Ukraine should consider not sinking. It may cost Russia more by leaving it afloat.