It would seem that way, given that the episode was almost a one-for-one recreation of the comic. Aside from the scenes with Maggie it was almost exact! Until this season they haven't really been doing that. Not sure why they're deciding to do it now but I honestly am fine with it.
They haven't done that bad really. It's had it's moments where it's been pretty close, the biggest thing is the death remixes to throw people off, and the heavy use of composite characters. So lets realistically analyze some of the differences...
1) They killed Dale early and turned Hershel and Bob (Bob Stooky is actually a character from the novels "Road to Woodbury", and "Fall of the Governor Part I and II" if you didn't know) into composite characters for Dale.
2) The killed Andrea but she has lived on through composite characters (Carol, Sasha, Michonne). Michonne isn't a **** with a nooky death curse, Carol isn't a suicidal **** mess either (yet).
3) They killed Sophia, but it's becoming obvious that they've tossed in Enid to fill the Sophia void. They've probably planned doing so all along.
4) We had Beth instead of the Billy Greene and the twins (which kind of irked me) but I guess there's the logistics of having twins and the whole thing at the prison with Thomas and the twins would have been too gruesome for TV... But then again, they've done some pretty gruesome things.
5) The scene where the guy tells Carol to look after his girls is nearly verbatim the scene between Andrea and Allen regarding Billy and Ben... We later find out that set us up to actually have the story of Billy and Ben played out through Lizzie and Mekka.. No big deal that they changed the gender of the kids really... Though I wish they could have concluded it the same way as in the comic with Carl sneaking in and killing Ben... That was actually kind of a defining moment for Carl, but I think Carl coldly killing the kid near the prison was supposed to symbolize Carl killing Ben.
6) Hershel receives the death of Tyreese, Bob gets the death of Dale, etc.
7) They made the Hunter saga a much bigger thing than it actually was through "Terminus", but with basically the same outcome that freaks Gabriel out.
8) Kind of ticked me off they didn't stick to the comics in regards to how Lori (and Judith) died. Having Judith still in the story is kind of awkward. Also I will never forgive them for not cutting off Rick's hand... That is all.
I could make the list much longer than I have but you know what I mean? It's all mainly changes with the characters themselves. The story has consistently had the final destination of the story arches from the comics at heart. I love it that they haven't glossed over any of the really iconic scenes from the comic, like Rick biting the throat of the marauder on the road to DC, or the dispatching of the hunters, and the "No Way Out" arch they just did, etc. But the things they do change and add is so the hard fans of both the comics and the show A) aren't consistently spoiling the show for everyone else and B) having the differences keep us interested. But it is REALLY awesome they're following the comic so closely now, and maybe that's because we are approaching so many iconic moments.