Hi garyjg,
I've included the link in which you got your info from for other reefers to have a look.
http://www.aquahobby.com/marine/e_wurdemanni.php
I do not know Craig Burda but I'm sure he's entitled to his own opinion just like many other people. Craig's opinion is applicable to most marine organisms. A lot of literature will list angelfish as non-reef safe but many SPS keepers keep them in their tanks anyway. Shrimps from the Lysmata genus will only harrass other reef inverts if they lack both natural and artificial diets, in other words being starved. Such behavior is usually rare in a reef tank due to the wide range of natural foods available. All shrimps are basically scavengers and if they are seen to be harrassing other inhabitants, it usually implies that the inhabitant is about to pass on anyway. I believe that all aquarists should take all advice with a pinch of salt.