I didn't actually see the results show, but I have to wonder if the judges regret keeping Matt in last week's show. I think they assumed he would get voted off this week, and he wasn't even in the bottom three.
Allison was, and has been there numerous times. Next week's show theme is the Rat Pack, and I can't imagine her pulling it off, so she's likely to be dumped, putting Matt in the top 4, where he certainly has no place being.
Strangely I think Anoop would have done well in the Rat Pack week.