never heard of a false morel
my guess would be that is a Gaint Helvella, its definetly some type of Helvella. the only other Helvella though that it might be is the brain mushroom, but i'm almost positive its a giant Helvella, could be wrong too 
well just researched it, and it looks just like a false morel. never heard of them before though, glad i found that out though. from what i read they are very poisnous to eat
I think you are pretty close.
To me it looks like a Snowbank False Morel (Gyromitra gigas)
False Morels are Gyomitra esculenta
The Helvella that it resembles is Gyomitra californica
And yes, they can make you sick.