Could have turned out bad for you. I gotta ask you though. Why did you want to induce a shock gobble? That could have sent the coyote right to the tom and if it did not kill the tom it could have spooked the tom ,and any other bird with him, away from the area. I always carry a revolver with me when I scout. Started doing this after a freind of mine and I hed a run in with an unhappy momma bear. Something to think about though. Coyotes don't generaly go after something large unless they are in a pack. Chances are if that yote was looking to make you his lunch there were more around that you could not see. Kind of like raptors. (The dinosour not the bird). Like I said. It could have been bad for you! You were lucky.
If it gobbles,runs on gas, or is married to you it will give you trouble!