http://imgur.com/FVsGSYC

As you can see from the screenshot, my character has totally disappeared... And just as my luck would have it, it happened right after a legendary drop... (Note the green "Chest Armor" just above the mouse pointer.)

I cannot die and I've tried using skills (teleporting to town, drinking a potion, etc) but nothing helps...

I have been experiencing very bad lag (note the red latency indicator) which could be part of the problem?