Multiple people crashed in a ranked game, and i've also seen this situation reported on Reddit, so i'm submitting what information i have.
I've included two screenshots, 1 of my screen during the freeze
and 1 of another player reporting the same
I am using Arcdps and Blishhud, crashes are pretty uncommon for me. ArenaNet.log hasn't been written to in almost a month, so i've not included it. Let me know if you want a copy and i'll get it uploaded.
The first screenshot shows my actions at time of freeze. I had just exited Electro-Whirl, and the crash timed pretty inline with me letting off the key to use Grenade Barrage.