simply use orphanRemoval=true, instead of re-doing it badly by hand, in the controller.

Hmm, it seems slightly shorter ;). Can you add a few things?

* Code example showing the `orphanRemoval`.
* Short words on what this does (very short, mostly we should just link to Doctrine's docs)
* Make sure all of your lines have a line break after the first words that crosses the 72nd character (so lines are all 72-78 chars long more or less).

Thanks dude!