I can see why nobody has answered you as of yet, but Hell, I will.
I've been watching this chat show called Ricky Lake.
WHY? Why would you watch such an insipid Television show?
An Ex-Vampire eh?
There are nut jobs EVERYWHERE (your next door neighbor may have a jar of genitals in some formaldehyde down in his basement).
Many people like to place blame wherever they can. Look at some court trials on Court TV (now Tru-TV).
These people are mentally deranged sociopaths and should be seen as nothing less than that.
They belong in jail or in a padded cell.
I might not be cultured in this area as much as others on this subject.
Correct. You are most certainly NOT.
Whether people drink blood or not i could care less, it's the drone syndrome i keep seeing, usually among the right hand path.
WELL I CARE! I care a great DEAL! Why you don't bothers Me. What if one of these nut jobs cares to slit your throat or wrist to 'become more powerful'. ????????
I imagine the members, magisters etc will likely have dealt with these people before, should they exist.
Correct. I laugh at these people daily. They are searching for anything. They find nothingness in the end which is exactly what they deserve.
These imbeciles don't help the Satanic movement and it rages me.
I'm only a member. I am NOT an Agent. I am not a member of Hierarchy but I do know enough to say this:
The
Church of Satan THRIVES. The
Church of Satan needs NO help in movement. The
Church of Satan has been doing swimmingly since it was founded by Our dear departed founder Magus LaVey.
We do not evangelize, We do not greet people door to door in white shirts with ties and those who are one of US find US.
The
Church of Satan does NOT nor has never needed 'help'.
Our outstanding members speak for themselves and We have wonderful agents who speak with the media to tell the public the 'nitty gritty' of our Religion. Calm down.

I hope I didn't offend you. This is simply how it is.
The CoS has an outstanding reputation (regardless on who or who does not want to admit it). We are law abiding citizens. We are kind to those who deserve it and productive citizens.
Vampires.......
Look at My links below. Do some reading.

Edit: I noticed that you mentioned that these 'supposed' Vampires followed the Satanic Bible.
POPPYCOCK.
TSB is written in a way that anyone with a brain can comprehend.
The HOLY Bible (Eve laughs) has been translated in many a different form. Some feel that every word is LITERAL. Some....do what almost most do......they abide by those things written that they agree with and interpret the other parts in ways that allow them to lead their lives as they have always done.
How many religions do We have where the Preacher preaches from a KJV Bible?
Then......there are the re-written ones. Love those.
All of it is horse shit.