Avoid backing into the corner; instead press against it and turn around, to put Samus into a better position.

Exit condition:

{
  "leaveWithSidePlatform": {
    "height": 2,
    "runway": {
      "length": 28,
      "openEnd": 0
    },
    "obstruction": [
      1,
      0
    ]
  }
}

Dev note: Max extra run speed $5.0, or $5.1 with Hi-Jump.