Not really. At the moment, you will have to delete all the extra nodes by hand. It is possible to edit the code to manually change the "10 yard auto deletion of every nearby node" range to something bigger.
IIRC this code is common to all profession modules, it may need a bit of tweaking to merge them with a specific radius. Plus, the clouds move up to a pretty big radius from their span point, making it really hard to determine it.