So you're saying that anyone who has examined Santorum's voting record and does not care for it, is part of the evil Republican "establishment". I don't think so.
You are only trying to shut up anyone who may have an opinion that is contrary to yours. Read his voting record and then try to convince yourself and the rest of us that Santorum is a true conservative. He is not.
If you believe this, you are in quite a conundrum because there is no doubt Santorum is more conservative than Romney or Gingrich or Perry or Paul. If your only criteria is the most conservative candidate running, you will have to support Santorum.