Either use a long chain of controlled, short spring ball bounces to make it past the crumbles without touching the spikes, or simply hold jump and forward and take 7 spike hits.

Requires:

"h_useSpringBall"
{
  "or": [
    {
      "tech": "canTrickySpringBallBounce"
    },
    {
      "spikeHits": 7
    }
  ]
}

Dev note: This is a dashless strat.