im not sure does the bad ending that you say we could not be able to do was the secret ending or was it really one of the 2 new bad ending that you add .(because i finish angel and the way to obtain it is just not there anymore)
Oh yeah the secret ending you refer to is also not doable anymore after doing angel but i wasnt refering to that, i actually forget that that was also not possible afterwards anymore.
But the the bad ending i was talking about also is not doable after angel anymore as well.