I was on a short holiday recently. In the Bed&Breakfast, there was THIS small sink with two separate taps. I couldn't perform my usual morning handwashing routine, because the sink was too small AND I would have either burned my hands under the boiling water or suffered pain from too cold water. So I just didn't wash my hands in the usual OCD-way.
Maybe you have also experienced that sometimes it is easier to not do a compulsion when you have no other choice?!