Rushing out a release without proper software engineering hygiene. Sounds familiar. From everything listed above, it would sounds like this must have been yet

Rushing out a release without proper software engineering hygiene. Sounds familiar. From everything listed above, it would sounds like this must have been yet another one of those "Just F-ing push the change the server now, dweeb, the traders are going crazy" environments. That is to say: the real problems were most likely cultural, and not about the sum of a certain set of bad practices.