So I bought the house about 4yrs ago, now entry door is sticking again and tiles are cracked. I asked a handyman to craw into the crawl space to take a look at the posts underneath the house and picts as attached. How can such movement take place? It seems like in one pict the cement block moved. Is this type of movement normal? Why type of repairs will be needed here? Any suggestions? Any help is greatly appreciated. Thanks.