Maybe there's more alternative endings:
1. The sitcom ending. Will Kane finishes off the final bad guy, the makes a quip with a pun on the word "high" or "noon," and the surrounding townspeople all have a hearty laugh. Credits.
2. The Twilight Zone ending. In the next town, where Kane and his wife are scheduled to arrive at noon, one of his enemies is raising a posse to wait his arrival. Dun dun dun!
3. It was all, say it with me, a Jacob's Ladder scenario.