Is my client having increased sensations of inner perturbation because of picking up new spirit meddler attachments?

This is very true. As you saw, they are trying to hide but you saw through the subterfuge that they are back, that is to say their cohorts have found a way to commandeer this individual to prey on him. The newcomers are quickly resuming the prior perturbations because it had been working. To disrupt sleep, to create consternation within is the game they turn to most frequently to ramp up the demand for incoming energy by their host, and this benefits them in tapping into the new energies when darkened to their liking by the host’s unhappiness in feeling perturbed in some way. Doing a repeat healing, clearing, and cleansing will remove this menace and will strengthen the ongoing healing further.