Exactly this.
They were between a rock and a hard place really. Three options available:
"Yes we were handing out wrong advice but we didn't know it was wrong - we believed in what we were saying at the time and said it in all sincerity because we hadn't thought it through, didn't know what we were talking about even though we were presenting ourselves as the advisory go to expert for help in this area, and basically aren't fit for purpose m'lud"
"Yes we were handing out wrong advice and we knew it was wrong, but our political agenda involved necessarily trying to get people to believe the law was other than it was, and drat, we'd have got away with it if it wasn't for those dratted kids....it's a fair cop."
"Yes, our advice isn't compatible with the law and isn't actually correct, but it's not our responsibility if people choose to believe us and don't check the facts for themselves, that's their bad. If people want to pay us to tell them wrong information that's their look out, and when the legal shit hits the fan we'll wash our hands and walk away."
None of the three choices were going to end well for them.
Cases like this and the Edinburgh Rape Crisis case opened one hell of a lot of eyes, thank you Alison for your courage and persistence.