Hi ngiolet,
with existing tools, my spontaneous idea would be :
make yourself a space "trash bin" and a content type "tobedelteted" and setup an action "mydelete".
"mydelete" does the following :
1) change type of content to "tobedeleted"
2) move to "trashbin"
Then create a business rule
"if content type = "tobedeleted" and "leaving", then …."
Might be, that an aspect or a category would be suited better for that, I guess you need to think about it 😉
Regards, Norgan,