Posting this in here as asking ZOS for help is a waste of time.
Apart from Spambush and Toppling Charge freezing up my skills, this is my biggest PITA I've been having for a long time. Happens at least once every night, fixed by re-log only.
Specs:
i5 3570k
GTX 670 evga 4gb
8gb Corsair Vengeance ddr3
500gb Samsung evo SSD
See video
http://youtu.be/4jWjj6qLt1I
PC EU