Never seen it happen that fast, last year my buddy shot a buck and caught it on video we viewed the tape and he was 100% sure on the shot and we went to the site and found blood but not a great amount so we backed out till morning got their the next morning and he wasnt 60 yards from the stand but the coyotes had already ate most of it, never seen it happen as fast as it did for you tho,
I had two coyotes chase a fawn under my stand one time i fired off a shot at one with my bow but it was futile they were moving way to fast, and last week my dad had a flock of turkies under him and a coyote came charging in chasing them but didnt get any they arent real bad yet in wv but way more populous then they were ten years ago