You do not actually get rooted but the animation of an auto attack get streched so long that you basically bug out and can't move properly. This happens when your attackspeed is reduced dramatically (not 0, lower attackspeed(the number) = higher attack speed).
Salve - Dragon Sage
Superiors - Guildmaster
New/Returning Player Guide
http://forum.playrohan.com/forum/sho...#axzz5nYmMs51h