It is required to avoid hitting the Sciser with the Power Bomb, and to position the Crystal Flash so that the Sciser can hit Samus from above so it avoids the light orb. Using the global counter-clockwise crab, the only spot in the room that is usable is the spot with the two shot blocks by the left door. Break the two shot blocks, then wait below them for nearly two minutes, until the crab is visible in the visible spot, four tiles right of the bottom shot block. Wait approximately two more seconds before laying the Power Bomb to Crystal Flash, while Samus below or a bit to the left of the low pointy ceiling.

Entrance condition:

{
  "comeInWithRMode": {},
  "comesThroughToilet": "no"
}

Requires:

"canBeVeryPatient"
"canComplexRModeCrystalFlashInterrupt"
{
  "ammo": {
    "type": "Missile",
    "count": 10
  }
}
{
  "ammo": {
    "type": "Super",
    "count": 10
  }
}
{
  "ammo": {
    "type": "PowerBomb",
    "count": 5
  }
}
{
  "or": [
    "h_fullEnemyDamageReduction",
    {
      "and": [
        "h_partialEnemyDamageReduction",
        {
          "resourceAtMost": [
            {
              "type": "RegularEnergy",
              "count": 39
            }
          ]
        }
      ]
    },
    {
      "and": [
        {
          "resourceCapacity": [
            {
              "type": "RegularEnergy",
              "count": 199
            }
          ]
        },
        {
          "resourceCapacity": [
            {
              "type": "ReserveEnergy",
              "count": 199
            }
          ]
        }
      ]
    }
  ]
}

Dev note: The clockwise global crab may also be usable, but it is more difficult to set free. Neither crab is usable in G-mode, because the blocks are not breakable.