Can force delete a replicator V2 session?

We have a pair of NS120 arrays using replicator for FS replication. We used local replication to move some FS to a new set of disks, but when trying to delete one of the old replication jobs it has deleted the target end but not the source side.

The other jobs did delete, but the new ones now run a lot slower than the old ones.

Is there a way I can force delete the job that has an issue? If not, is there a way I can clear all the replicator set-up and starting again, without  losing the file systems?

Thanks