You're more than welcome to be pushy in this case. I apologize for the delay.
I'm not sure what's happening, unfortunately. With the code change you made, I just tried to log back into your site using a test Twitter account of mine. I was asked for the Write permission, as expected. I then tried to create a post and it was successful. Please feel free to test with the SourceCoast Test Twitter channel.. they'll go to:
twitter.com/alzander77
I know I've asked you to delete the channel and recreate it again, but that's my best guess again in this case if you haven't done so after you implemented the code change. It's possible something got clogged in there when that bug was there.
Beyond that, we may have to request FTP access to your site so that we can add some special debugging code to see where things are going south. That will also help with the model error in your other post, which I'm about to respond to.
Apologizes again for the delay, but we'll get you going and be more responsive going forward.
Thanks,
Alex