Earlier quoted context omitted.
If Kevin broke the site, it's a process problem. Kevin didn't break the site, he introduced code that might have broken the site, and the lack of tests to have detected the it broke the site. Jane then peer reviewed the code that might have broken the site and approved it. Bob then failed to notice that the site was broken during QA. The QA environment was apparently configured differently enough by Taylor that the s…
As true as this is, unexpected problems happen. Kevin may be the only one that can fix it, or at least be able to fix it a lot more effectively than others. The issue might not be Kevin's fault (i.e it's really a process problem), but being able to talk to him immediately (or at least know his schedule) will go a long ways in getting the issue resolved in an acceptable time frame. Nothing against remote work, but kno…
About the only time where I've seen this fail is if it was a publicised feature launch that was way premature.