OK, first things first. One, it's always struck me that WC has made positive contributions to any thread - so why hide (but, when I think about it, it's probably the same reason that I do!). Two, am I supposed to know which Timothy you are??
As to your question, I think everyone has a subconscious tendency to transpose a common phrase or letters if the brain is left to its own devices. The only reason I can think of for this particular thing is that I comes before L in ILS!