I cannot speak for my client, but I can assume that they decided to make this commercial decision to not lose passenger revenue and to take the risk because they got the verification from the French border authorities that the guy was indeed who he was presenting himself to be, which was right. What Richard Reid did was analyze. He did a risk assessment. At that point, after September 11 but before the new legislation, shoes were not taken off and were not screened, apart from the normal screening. He had his bomb installed in his shoe in such a way that he knew that according to the then existing security protocols it would not be found.
On March 1st, 2011. See this statement in context.