This strikes me as gross, willful negligence -- with an attempt to conceal the same from your client ("rather than admit I couldn't get WPA to function"). If one of your clients suffers for it, I think it would be entirely just for you to suffer the consequences.
Real network security professionals do not behave as described above.
William, please don't tar us all with the sticky brush of your own behavior.
Thor Lancelot Simon snipped-for-privacy@rek.tjls.com
"The inconsistency is startling, though admittedly, if consistency is to be abandoned or transcended, there is no problem." - Noam Chomsky