Weren't they planning on doing it the morning of their 5-6 hour zombie parade? Makes sense to wait of you were planning on doing it way ahead of time anyways
My only complaint was the completely predictable dialogue and killing of Tobin.
If I recall right krich has complained about flashbacks before. Maybe he just doesn't like them period.
like I said, I get that they had planned on getting around to it. that's exactly the part that I thought was dumb. it took glen, his padawan and Dr. Dre less than a minute to eliminate them. I just don't see why when there was a dozen of them there, they couldn't easily done it and move right along after a minute or two of taking care of the problem