You're right, of course, David. Policy-wise that has to be the best approach.
However ... I must admit that, in my work for "private" organisations (overseas clinics, and so forth), I have always been successful in bringing flooded pumps back into service ... never needing the yellow* bag, and avoiding the long walk to the incinerator, and what-have-you. Sometimes - but not always - new parts were required.
In some situations it can be a case of "needs must".
You just have to be careful. And I have survived thus far.
* Other colours may be available.