No, I don't think so..consider the possibility of him having a lucky escape to the elementary school for rescue evacuation but I do agree with how Shidou could have manipulated the people in order to throw out Rei's mother...I think Saya's father is back inn action~
EDIT: It's almost the middle of July, where is chapter 30?
Great chapter; it took me a while to get to this series but now i can see what people meant by how slow it is; i didn't realize since i only caught up now but there was only one chapter in all of 2011?! Hopefully the next chapter comes out soon because while I'll wait since there are always other series to fill the time some fans may lose their patience if it keeps up.
I absolutely hate the zombie genre, I think it's entirely overplayed and yet I just marathoned all the last 29 chapters in one sitting. Intense manga, I really hope something happens with a new chapter soon.