Weird Boxwood Growth - Upright Branch Covered In Flowers - April 2025

In Spring 2023, I added five (very small) one-gallon Green Velvet Boxwoods to the front porch bed.  We already had a row of them planted in part of the bed, so adding these extended that line of evergreen shrubs across to the new bed (after removing the large Norway Maple).   Last April (2024), I posted a photo showing their first Spring and the tiny amount of growth that was put on in their one growing season.  

2025 will be their third growing season and they've begun to put on some size.  But, one of them is showing some weird growth.  A water-spout.  Or a Witch's broom.  Or something.  See below.  There's one branch that has SHOT UP over the Winter and has emerged larger than the rest of the shrub.  And, it is absolutely COVERED in flowers.  

I'm not sure what to make of this, but for now, I'm just leaving it alone.