So I ended up with a really bad spawn in the Twilight Forest, which wasn't the end of the world itself, just annoying to do corpse runs. The trouble is that when I die, it just respawns me either by my portal (just fine) or 500 meters away in a dark forest (very much not fine) still in the Twilight Forest. To make matters worse, while I was finally recovering my body from my initial spawn in that zapped me underground away from the portal, I accidentally broke one of the dirt blocks around the portal. Now it's just a puddle.
So, I seem to be stuck. Even now that the portal is gone, I still respawn in the Twilight Forest inside my little portal protection hut.
Is there a way to get back to the overworld without teching all the way back up to LV in the Twilight Forest, or cheating myself back to the overworld?