I do not think there are bots trading Dash. I know I personally have been buying a lot of Dash this past week, and likely others have been doing the same. There is no historic trade data available to build a good bot trader
To be honest, this is not the first time... It happened to me on Cryptsy, and that was definitely ruled by bots ! those 0.00xxx buys and sells, fake sell/buy walls. It happened to me also before, that price went from very low point, to point where I previously bought, just right after I sell coins...
Yes, there are bots. And count also margin trading @ polo ( still big DASH exchenge ). And count also many MN owners that might decide to buy some more for next MN just because they can. And count over 3 mil DASH at MNs. So there are huge masses that can move, if disturbed. So price does not move by rules. Just sometimes. Best is to watch and when price is moving down - start to buy and be ready to hold for long.