I'm pretty sure it did not stick anything through the plasma sheet- that is impossible. You would eithe melt the thing or just shift the plasma sheet a bit. It forms as air is compressed on contact, simple as that.

What IIRC was actually done was that some antennas were placed on the back of the shuttle & its size was big enough that the plasma bubble would not fully envelope it - it would be open up to space. And that antenna on the back would communicate with TDRS satellites through this gap, enabling contact through the whole re-entry.

Starship does basically the same, just with Starlink satellites instead of TDRS.