Well I can admire your respect for other designers, but I must differ in opinion.
That X comes directly from our corporate logo, the other designer in question didn't create it of his own imagination, but used an existing design.. which based on your words means he shouldn't.
Who was the designer? I am going to remove his entries. It's one thing to defend intellectual property rights, it's another to badger someone else about something that they too copied.
Alternatively, if you are still not comfortable due to whatever regulations this site enforces.. if at the end of the contest we still feel that #18 was the best candidate, would you be comfortable with releasing it to us and we will pick another one of your logos as the winner?
Thanks