Riot and Overflow collision locks game

BlessedOne

This could have been a one-time issue; however, I thought I would post it in case anyone else encounters the same thing.
PW is Sarkhan Unbroken.
I had one Tarkir Dragon token on the field (2nd ability).
Applied Biomancy was cast that bounced my opponents creature.
I had Season of Growth on the field so playing Applied Biomancy caused a card draw. I happened to draw Leyline of Vitality.
I played Ravager Wurm and was prompted the Riot question (haste or +1/+1). I chose +1/+1.
On the stack at the same time was Leyline of Vitality. I was prompted the Overflow question and I chose not to use it.

The crash happened at this point.

I waited to see if the game would timeout.
The LPS kicked in. it went through it's timer then nothing.
The game has been in this crashed, inoperable state for about an hour.