I tried so very, very hard to replay that last portion of the game to see this EC.. but I just couldn't. I truly hate Mass Effect now. This is a feeling I cannot help.
I ended up alt-F4'ing out of the game and look the endings up on youtube. But I didn't get past the first one I checked: Synthesis. I checked that one first because I thought it was the worst of all endings, with Shepard basically doing what Saren and the Reapers wanted all along. Instead, I watched an ending that made me want to point at my screen and laugh. It was so fucking ridiculous! EDI was narrating it, basically explaining how perfect Shep's decision was to merge robots with organics. Suddenly all living beings had green glowing eyes and were playing golf with the Reapers. What. The. Fuck?!
I didn't bother watching the other endings.
Mass Effect is dead to me. Bioware is dead to me. This EC was insult to injury.