I'm not sure if I'm doing this post correctly but rather than lurk in the background, I decided to introduce myself.
I don't have extensive experience with the Shasta Abbey community. I've been there less than a handful of times most notably during the new years celebration of 2008/2009. It seems as though the monks that I most enjoyed, Rev. Celia and Rev. Sheridan, have left the community recently, which I find interesting.
I can't say that I noticed any cult-like behavior but I stayed the last time for about 10 days or so and did notice a bit of a weird vibe.