Razor clams good or bad?
There are two types of razor clams.  Since you are in the US according to your profile, I am guessing you have the type from the Pacific Northwest, which look like this (picture from Washington Fish and Wildlife):



It is normal for the razor clam to not completely fit into its shell; in particular, the digger or "foot" will extend from the shell.

According to Piscatorial Pursuits (I couldn't make that name up):


  The neck tips are very tough and give off a very strong scent.


The Washington Department of Fish and Wildlife has a detailed page on cleaning and preparing the clams, with pictures.  Note that they indicate (emphasis original):


  During cleaning, you may find small "pea crabs" or flatworms inside
  the body of the clam. NEITHER OF THESE AFFECTS THE QUALITY OF THE
  RAZOR CLAM MEAT.