No, that would be too much for a DID patient and could lead to further splitting (creation of new parts). First step is to teach them to stay grounded, to stay present and not take the easy path and dissociate (i.e. go away). When struggling to stay present someone with DID may exhibit OCD patterns -- scratching, grabbing, fiddling with fingers etc. -- all without realizing. However, when this happens there's usually some level of co-consciousness with a part that is suffering or has OCD. So in this case the OCD behavior would "belong" to that part while some other part is "out" (they'd actually both be "out" at the same time). It's a very complex disorder.