JMO, trying to look at this the way an impartial judge or jury would -
The RCCL document, which was very well crafted, stating that SA held her out the window is only a document stating that, the same way almost everyone who has seen the video says. It did not PROVE that by measurement SA was out that window, or that the baby was outside the window until she fell forward.
Thinking about that, this may be where RCCL has stated something as a fact that is not known to be a fact, unless there is a video from outside the ship showing it.
As for Winkleman, he "represents" the Wiegands. IMO it is a little unfair to pin the misrepresentation all on him, when he is only acting as the voice of his clients and can only say what they have told him and approve of.
With all that said, IMO again, AW and SA knew from the beginning that SA was negligent here. SW made a statement to the police, AW supposedly made a statement to the press. It is KW that cannot accept what happened. The other two are deferring to her grief, and afraid to say "no".
Could be Winkleman also is deferring to her, since she is also an attorney, and he knows that if he didn't take the case, another attorney would.