There is no logic in buying back the coins when the price went a really long way from the price you sold and i am not sure why you made that decision to offload all the coins when there is fork coming up which could give you equal amount of coins if there is a split and there are many air drops coming the following month which could give you a sizable amount of increase in your total asset,i believe that the recent rally is simply because people are trying to accumulate bitcoin before the fork so that they could multiply their assets.