So I just got some news:
Apparently the system I was working on was directly attached to the SAN and the mainframe via some modules that were loaded synchrously with the other main SAN. And when those modules weren't loaded correctly, the mainframe went down about an hour after I left.
So in essence, anyone who would have worked on the system just as I had just restarting it would have knocked it out. I just happened to be working on it. And I can sense that if they don't resolve that issue, then whoever comes in and works on that raid array is going to take down their system again.
Jesus...