Crash director Paul Haggis has severed his ties with the Church of Scientology, thanks in part to the organization’s stance against gay marriage.

The 56-year-old who won an Oscar for co-writing the 2005 hit Crash, wrote a letter addressed to Tommy Davis, the head of the Church of Scientology’s Celebrity Centre, revealing his decision to quit the church after 35 years.

In the letter, dated Aug. 19, Haggis said he was disappointed by the church’s tacit denial of gay rights and its backing of California’s gay marriage ban.

And so, after writing this letter, I am fully aware that some of my friends may choose to no longer associate with me, or in some cases work with me. I will always take their calls, as I always took yours. However, I have finally come to the conclusion that I can no longer be a part of this group. Frankly, I had to look no further than your refusal to denounce the church’s anti-gay stance, and the indefensible actions, and inactions, of those who condone this behavior within the organization. I am only ashamed that I waited this many months to act. I hereby resign my membership in the Church of Scientology.
Sincerely, Paul Haggis

To Read Haggis’ Full Letter, Visit Movieline.com