surely that period of disruption comes from the summer of 'smashing the league' and the terrible appointment of Monk. None of that would have been Bauser's decisions. He won't have given Monk the job, and he won't have sanctioned that budget.
We can also go back earlier when Gibson was more hands on and say that the sacking of Southgate to replace with Strachan and a splurge of cash on second rate scottish players was a precursor which was followed by a 'period of disruption'. Again that was Gibsons strategy.
This isn't slating Gibson by the way, I don't blame him for opening the purse strings to try and gain promotion, but when it isn't done in the right way supported by good scouting and accompanied by a poor manager it can have dire consequences lasting several years.