Can you send me the URL to your HTML/web form at firstname.lastname@example.org and I will take a look, what web browser and operating system are you using? You are referring to an online form or is it PDF? In the web form it should certainly not take any time when you select "Other"
You can clear the "Other" choice in a FormsCentral web form by removing the text and unchecking the selection for Other, also simply unchecking it will make it so that information is not submitted (even though it still shows, it is greyed out and won't be submitted).
This should be fixed now, please let us know if you are still having a problem with it.