So are we saying the resulting colonies of queens of an existing aggressive colony are ALWAYS aggressive and the ONLY way to revert to passive bees is to requeen?
In biology, there are rarely the absolute answers that you seem to be looking for here. You have to get used to dealing with "most of the time" answers.
If you read books like "Bee genetics and breeding" by Thomas E. Rinderer, you will see that the expressed behaviour (phenotype) is the sum of the genetic attributes, an environmental component and a residual error that you get in most statistical equations.
That said, you can look at the genetic component and break it down
Drones, being haploid, inherit all of their 16 chromosomes from their mother. All the sperm that an individual drone produces are clones because he has only those 16 chromosomes and must pass them on. However, individual drones produced by a queen can vary ever so slightly.
If you assume that a queen only mated with a single drone, it would be easier to understand the possible outcomes of their union. However, the queen mates with a number of drones, each adding their sperm to the contents of the queens spermatheca. When the queen lays eggs, we see multiple "sub families" within the worker population and the behaviour of the colony as a whole is the product of all of these individuals (AND the environment they are in).
The queen (and worker) being diploid receive half their chromosomes from their "mother" and half from the drone whose sperm fused with the egg nucleus (their "father"). All the queens eggs are not the same though. The 16 chromosomes of the egg are a random assortment of the 32 she has (16 from her mother and 16 from her father).
When you put all of this together, you will see that you can't talk of certainties the way you would when talking of the output of a machine. You have to recognise that its like standing on the beach with the tide coming in: the sand beneath your feet keeps moving.