“skip off the atmosphere back into space”
I don’t think this one “skipped”. I think in just happened to be in the atmosphere for a few seconds on its relatively straight path. I don’t think this one exploded. There are videos showing the entire contrail, and it is about the same diameter for its entire length. I don’t think this one impacted either. It simply passed through the atmosphere and continued on its way.
Has anyone speculated what all the smaller explosions were after the big one? I’m guessing it was fragments that splintered off the meteor and made their own booms.