I did draft a reply to a few points but I lost it. So here is a quick precis.
Use of bigot - it has to be correctly used in the first place - just because you believe something is sinful doesn't mean you show prejudice against someone and I don't think Farron does. But generally, perjorative terms of any kinds are thrown around too often, we are fortunate to have a language with many words, it is good to show ambition.
The quote etc - four times at most and I will continue to use it as it illustrates his extreme views which based on more recent postings he still seems to hold, so even if he apologized which he didn't on the forum, I think it would be an apology for being caught out. My underwear has never been soiled reading this site. On Sadiq Khan, I don't recall any threads but I certainly wouldn't have sufficient knowledge of the muslim faith to know how widely held certain beliefs are etc. Tim Farron is hardly a political bedfellow - obviously a metaphor.