I understand your idea, but it is still ludicrous. Now if the US just stood by with their thumbs up their bums over this, then yeah... your theory would be plausible. But they sent a destroyer over there demanding the ship and its crew back... that blows (no pun intended) your theory off the map.
It's ludicrous on you opinion due to the unfamiliarity with the conflicts in the ME ,but anyway this is the fact.This is the politics ,where no limits for doubtful and unbelievable actions .Especially in Obama presidency we saw many things,so I expect more .If we would talk in a military way , if Iran would commit such a stupid action without prior permission from U.S then we can say bye bye Iran.The United States Fifth Fleet in Bahrain which is part from
U.S NAVY can deal with Iran in few minutes, the distance separating them is
less than 400 km .Which is means that was NOT coincidental because there is no chance for Iran to mess with U.S Navy .Moreover, to wipe of your theory
,there is huge gap between U.S military equipment & hardware and Iran equipment & hardware . The U.S marine patrols radars and planes will detect Iran's ships before doing that .(the tech play a role here )