Bruh… 
How many years had HS been around? And still they don’t have a better solution than:
“As a tip, if you run into this and realize it soon enough. Immediately force close your game and restart. If you are fast enough, there is a chance you can still reconnect to that game to finish it out.”
Guess you can’t ask much from a small indie company such as Activision/Blizzard
(Yes I just had this issue and had a Nam’s flashback like experience, didn’t close and re-open fast enough tho)
Here’s a Non-solution from blizz: Endless turn, Card Stuck Hovering, and Never Roping