Is this a bid job? Default it!
If I understand it right, you are asking if it is kosher to cut the floor and rotate the sweep flat? That would be dependent of the condition of the conduit and where the coupling is. I am not sure what your plans are but you may have to cut out the old and go in with new. being that it has been cut before the concrete may come out "easy". Are the walls concrete too? Can you go up and over once you rotate the panel?
You want to know why they hired an unlicensed contractor?Because they are cheaper. If they can afford a condo on the 27 floor even it is in Detroit, they got money. People with money are typically anal retentive with their money. That is why they got money.
