This has happened twice for 2 different websites. They were both ranking higher for main keywords, then dropped, and now it's back but on page 10+ and the serp shows a random page from the websites instead of the home page like it used to. The first site has been like this for around 2 weeks, and this just happened to the second site within the past 2 days. Is this some sort of google hiccup? Or is there some way to fix this up?