Euonymus can be pruned before spring growth. So, now would be a good time to prune to reduce the width of the shrub. They also can be sheared at mid-season, if desired.
Please be aware that this shrub is now invasive in wild areas of Maryland and it is regulated by the Maryland Department of Agriculture as a Tier 1 invasive plant. You can find information about this on our website. https://extension.umd.edu/hgic/topics/winter-creeper-euonymus If you don't want to consider a replacement plant, at least cut back the spent flowers to help reduce its spread. https://extension.umd.edu/hgic/topics/introduction-invasive-plants