Um Guys, this is all nonsense.

There is no blue post anywhere stating that this BUG is intended. There IS however a blue post on the bug forums stating "Thank you, we will investigate this bug"

Be careful what you say, rumors run like wildfire.

As far as I can see, deathgrip is not being changed to a physical ability, and grounding totem immunity was not intended. This is just another bug that will get ironed out, hopefully quicker than FOK interrupt was.