The Telegraph link you referred to above is really confusing about this particular post. First, it seems to say that Winters said the post was made before the murder...but then a bit further on it seems to be coming after the murder...?
JusticeForLauren, I do feel very much for your family, please believe me. Me not being "convinced" yet about SM is not meant to be like a slap in the face, I promise you!
If he did do it, and it was premeditated -- it still boggles my mind to think he would post online about it in this sort of detail. Just really stupid -- or maybe he could have wanted to get caught, I don't know... . To "anticipate" that you would "lose it" in a TV interview afterwards seems way bizarre to me. And I just don't see when he would have had a chance afterwards to post about that, since he was pretty much taken back to the station and eventually arrested not long after the interview...?