Prepare the bundt pan by smearing it with the softened butter. Prepare a counter top by lining it with parchment paper.
In a large pot, bring the water and baking soda to a rolling boil.
Turn the dough out onto a lightly floured surface. Roll the dough out into a rectangle, roughly 12 x 6". Use a metal pizza cutter, and cut the dough into 1" pieces.
Working in batches of 15-20, boil the pretzel bites for 30 seconds. Use a large slotted spoon to remove the boiled pretzels, so the water can all drain away, and place them on the parchment paper- making sure that none are touching. Repeat until all the pretzels are boiled.
Evenly layer half of the prepared pretzels in the bundt pan. Brush them with the egg wash, and then drizzle with a tablespoon of butter. Sprinkle some sea salt evenly out over top. Repeat with the remaining pretzels.
Bake the prepared pull apart at 400 degrees for 25-30 minutes, or until golden brown and cooked through. If you notice any bits getting *too* brown, just cover them with foil.
Run a bread knife around the edges to release the pull apart from the pan. Then invert onto a plate then invert again onto serving plate. Serve the pretzel pull apart with the Honey Mustard Dip in the center.