I don't agree with the decision. But, he was not ejected for S&M hobbies. He was ejected because he was perceived to believe that women are subservient to men (evidently this was part of some of his online writing).

Here's a timeline of blog posts:

1. Larry's (the ejectee) initial blog post: https://www.garfieldtech.com/blog/tmi-outing

2. Dries' (founder of Drupal) following blog post: http://buytaert.net/living-our-values

3. Statement from the Drupal Association's Exec Director: https://www.drupal.org/association/blog/a-statement-from-the...

4. Another blog post from Larry where he clears up misconceptions and answers questions: https://www.garfieldtech.com/blog/tmi-part-2

More Info:

* Drupal community discussion on /r/Drupal: https://www.reddit.com/r/drupal/comments/60y9mq/larry_garfie...

* A great non-partial tldr; blogpost from Drupal developer Mike Ryan: http://virtuoso-performance.com/blog/mikeryan/thoughts-drupa...