Since the NYT uses figures over a period from 1998 to 2001 it is hard to know when these people sold (except for Mrs. Gramm). Stock sale prices range from $27 to $86. I'll bet most of the sales were made while the value was declining. When executives are selling and prices are declining shouldn't there be all kinds of warnings to investors? Why did the employees keep their retirement accounts invested in a failing company? If there was a company policy to misdirect the employees then those responsible should be held to account at least to some degree.
I have been suspicious of Enron since they paid Clinton a one hundred thousand dollar bribe to help them initiate what turned out to be a major fiasco in the Indian power plant. I believe that they thought the US government was going to guarantee that they wouldn't lose money on this mess.