One of the main problem in this case is communication, the project was bid lump sum at $50 M, but then there was a $1 M big error. The PM lost his project engineer and was not allowed to replace him with any experienced help. He did what was right trying to hire someone from outside and get the work done as soon as possible because he didn’t receive any supervision or support from the GC and the Architect.
The Architect didn’t do his job well, he didn’t supervise properly and the PM took most of the blame. At the end, trying to get the job done so cheap, fast and without a proper supervision can cause a lot of problems in the future.