Big hugs hun, we all have these blips sometimes and you seem to have got straight back into it so don't get yourself upset about it. It comes off just as quick as it went on! Could it be * week? I feel sluggish when I'm nearing mine.
I know how you feel about the signature thing, when I gain I hate updating my ticker in my signature, so sometimes I don't even bother cos I know it will get me down. I put on 4.5lbs a couple of weeks ago but didn't put it in there! Just updated it the next week when I lost most of it! Not sure if thats really a good tip but if somethings going to upset you it's best to avoid it.
Good luck for next WI! I'm sure you'll get the 2lbs back off! xxxx