Ice block while diving

[mcdiver]

The problem you have when the ice "chunk" is pushed beneath the ice is that the rope may get tangled around the ice block, but heck, that is a given.  But let's just say "What if." 

What if the diver starts his dive and ends up going in a direction that will cause the rope to get wrapped around this massive block of ice.  Now lets assume that the diver is unaware of this and he continues the dive, at what point is there a loss of "rope signals" between the diver and the tender as a result of the rope being wrapped around this block of ice?

Okay, so you lose your signals between tender and diver.  At what point do you send the safety diver in?

There is just one to many possibilities of miscommunication, and frankly, when my life may litterly be in the hands of my tender, do I really want to worry about that block of ice?  Heck No, yank that block out.