I think SA is defined as people being really anxious in social situations to the point where they avoid them and maybe having symptoms like shaking, sweating, etc which is not normal. I think deviant is a strong word and I doubt many people would use it to describe their SA. I think if you can go into social situations and be relatively confident without any SA symptoms then you don't have SA.
Here is a good link I just found.
http://www.anxietycare.org.uk/docs/social.asp