I would like to add that I think one reason the concept of Rock Bottom is confusing, is that when in the second half of Replay, the impacts of the crisis start to catch up with the MLCer and they can hit the bottom, really, really hard. They may well look like they are hitting "the" bottom, in the intensity, but the processing in depth has not really begun. This really is a sliding scale.
Moving through the second part of Replay, I have seen in my sitch, and versions of others, these bounces. The first bounce down seems to be when the practical aspects (financial, impact on work etc) of the crisis catching up with them, maybe around 18 months or so. Depending on what they got up to, this first bounce can be recognised with the "why does bad luck keep happening to me, its everyone elses fault". This bounce may last many months, with dips back into hard Replay to deal with it. Poor attempts, then serious attempts are made to deal with the consequences of this.
Eventually, this becomes "I caused this, how could have I, what sort of person have I become? I see no way out of it". This is clearly still Replay, but clarity starts to come through. Again, this can take a long time, with bounces back to Hard Replay and every day life interrupting. Attempts are made to deal with this, but the big picture is still not there, so these are perhaps not successful.
The third major Replay bounce that may occur, and perhaps comes closer the the "awakening" part of Replay, is the "Oh #@$%, this really has, really impacted on others who are very close to me." To begin with, this is a statement, again, then attempts may be made to try to fix some of aspects.
These Replay bounces for some can be really, really hard bounces too. For others, the hard bounces comes after Replay.
To me, the difference between bounces towards rock bottom during Replay and afterwards, is that it is after Replay when a much wider range of solutions are attempted, and there is growing self confidence that solutions will be found, which in turn promotes more realistic solutions. This is such a grey area it really is only in hindsight that patterns start to emerge. Its like depression during the second half of Replay is more involved with assembling the puzzle peices, so that when they eventually move to Liminality/Depression/Withdrawal that they have most of the peices, the job then becomes looking at them all and sorting them out. This process perhaps causes the Rock Bottom depression event.
Much like our journey after BD really!
Of course, each journey has different elements that carry different weight, due to the individual paths, damage caused, and personalities of those involved.