Or something similar.

I'm just thinking that the "angel" here could be referring to the player.

We already have "hyperlink blocked" and references to strings, we know for a fact that the player is a force in Deltarune some would rather not be there.

Also, heaven is often thought of as a perfect world, but also a higher reality. Something far more real than earth.

The real world could be considered a sort of heaven to the people in the Deltarune world.

It could also just mean cut the link between the surface or, light word and the dark world entirely, which is probably a simpler explanation.

But still, thought it was an interesting thought worth sharing.