Yes it was, it was a little easter egg.
You need to read the comics man. All of the major plot arcs are very predictable because they are lifted straight from the comics. I thought last years attack on the prison was a bit lame... they altered a lot of the plot and there wasn't any tank. So apparently they "diverged from the plot" only to just re-do the whole attack scene closer to the way it was in the comics this season.
I think they are burning through the comics waaaay too fast so what we are to expect from now on is a half season of filler with their made-up nonsense followed by a half season of the actual Kirkman plot.
I liked the mid-season finale, BUT again I have logic issues with Hershel's death just like I did with Dale's. Ok so how many people had a gun trained on the Governor? When he starts pulling that sword back nobody shot? Ok maybe they couldn't save him in time, but you can't tell me that immediately after that they all miss. Yeah that's some over-dramatic b.s. right there. Immediately after the swing he should have been full of holes one way or another.
Btw I was absent for it, but the whole "redemption of the governor" arc was lame. The guy is almost cartoon-like in his evilness... if you fell for it then you must have had someone turn the show on for you, because you aren't clever enough to work the remote.

The show frustrates me because they take really good actors and give them one-dimensional parts to play. The actors think that they are giving depth to the roles, but it's a superficial depth due to a poorly fleshed-out character. The very first episode featuring the Governor shoe-horned him into the villain category. He goes and slaughters a bunch of army guys, steals their gear, and then goes back to his town and lies his butt off about it. The was the end right there... he was a mustache-twirling bad guy from that point on and no amount of emotional speeches, flashbacks, or side arcs was going to change that.
If you want him to have a moral journey then you have to leave that stuff a little vague.
Am I being negative? Probably, but that's my job and we've all got jobs to do. (Because apparently that is a thing now as well?)