Wow, that's sure overgrown.* I think I would not transplant if I didn't have to, but leave it where it is.* A picture is so helpful.* It shows that it's been improperly pruned.* :(* To prune this type of shrub, the long canes shouldn't be cut, but one third of the oldest canes should be cut level with the ground each year for 3 years.* That way it won't be overpruned any one year and stress the plant more.* That will help to open up the interior and allow the longer and younger canes to cascade in a fountain shape.* Forsythia and lilacs should also be pruned this way.* Have I given you sites on how to prune shrubs?
Looking at the picture, you can cut those roots instead of putting back the soil.* I think that will be best.* I'm really glad you posted a picture.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.