To add to Gord's suggestion, when using TTC, you can leave the original data
column *untouched*, therefore eliminating the need to "rejoin" the
separated, "sorting" columns.
In the third window of the TTC wizard, there's a "Destination" box, with the
address defaulted to that of the original column.
Simply change that to an adjoining column, and the original will remain as
is.
Then just include the original in the sort range, and you'll then have a
choice to keep or discard all or just some of those separated columns.
BTW, you should follow Gord's advice and use the "split" data columns ...
that's just good "practice".