Outlying polls to each side of the race is how you get an average of polls that show you where the race is going. The more polls you have, provided they are done with a valid methodology and not to serve a partisan purpose, the more sense an average of polls make and the more chance you have that your average can predict the outcome more or less correctly.
I'm with Antonio on this.
It's only an outlying poll if the poll was publicly released. Obviously, this one wasn't ready for prime time. They held short of a wider release and retracted it. It amazes me that people want to include bad information solely because it looks good for one candidate over another.
Bad information is bad information. It should not be included if you are intellectually honest. Something was wrong as a matter of science or Rasmussen would have released the poll to not just subscribers.