In one version of the ending, the Sheriff was in attendance at Robin Hood and Maid Marian's wedding, indicating that he may have reformed or been pardoned.
The special edition DVD shows off a reconstruction of an unused ending for the movie, in which Robin briefly becomes a Dude In Distress following an injury sustained from his fall during the climax: he would be left with Maid Marian at the church while Little John went off to find help. Prince John comes in while Robin is still knocked out, and is prepared to stab Marian to get to Robin, while she is prepared to stand in front of him to defend him. Of course, both are saved by the timely arrival of good King Richard.
Another alternate storyline involved Prince John setting another trap for Robin by sending fake love letters to him and Maid Marian so they will meet in Sherwood Forest where his guards will capture them.