Corridors are very interesting, but more because of psychology than mathematics, I believe.
Judges try to stay in the corridor -- meaning that they try to guess what the other judges are going to do so that they can go along -- because, well, that's human nature. I think that "reputation" is only a secondary factor, in the sense that when I ask myself, "What scores are my peers going to pressure me into giving out this time?" the best guess revolves around, "I wonder what my peers will give this famous and dominant skater compared to that nobody?"
However, I think that fans give "the corridor" a bad rap. The corridor is so wide that It is practically impossible for a judge to be so far off as to land sufficiently outside the the corridor to get in trouble with the ISU.
The problem with the 'corridor' is that the judges don't use it enough. For example look at any protocol and you'll only find rarely that a judge marks an individual component much differently than the others. Sometimes on TR, but the rest are mostly within 0.5 marks of each other. With relation to other judges well you've got a lot of scope - for example the allowance is 7.5 points in total for PCS components compared with the average, so this works out as 12 points in PCS for a Ladies LP and 15 points for a man. Also it would actually be a bit higher than this as the average would include the judge's higher or lower values - my calculations are that the actual allowance is 13.5 marks for Ladies and 16.875 for Men if there's 9 judges judging. Hence there's a lot more scope for them to be 'brave', but often they're not, and they stick to 'safety in numbers'.