Unless I missed it, you haven't told us what you have to work with other than there is a fair amount of NM cable above the ceiling that isn't very well supported.
Is it laying on the ceiling tile/grid?
What kind of structural ceiling is there to possibly secure it to?
I also agree it shouldn't effect what you have done, though the EI probably can demand it be fixed - but should not go against the permit for what you have done. This should put it between owner and EI and you being possible person the owner chooses to have do something about it - under a new permit for new scope of work.