Yes, the leaf growth under the bloom has the clumps of out of control leaf growth (one or two opposite leaves is ok but a bunch from the same spot is not normal) so feel free to remove the shrub but here is one thing that you should still rule out: this witches broom can also occur when someone uses some insecticides and harsh chemicals on the bush or nearby. In those cases, the problem goes away or you can prune it off.
