After entering the room, quickly leave the morph tunnel in order to prevent getting hit by the crab.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": false
  }
}

Requires:

"h_EverestMorphTunnelExpanded"

Exit condition:

{
  "leaveWithGMode": {
    "morphed": false
  }
}