If you have opened the timbers to investigate the extent of the damage and or sprayed them, the workers will close off access from the nest to the exposed galleries. Thousands of termites will be sacrificed (or be killed by your spray effort) but the colony will survive.
The queen is probably laying a thousand eggs a day so your effort is just a set-back. It is probable the colony will continue their attack but maybe from a different direction (or even attack the replacement timber in a month or so).
Your best next step is to inspect adjoining timbers and the rest of the building using a torch and a sounding tool such as the handle of a small screwdriver or knife. A full description of how you can inspect your home is given here
If you find any signs of termite activity, do not attempt to open the timbers or any ‘mud’ until you have read and understood the section: Killing termite colonies
If, after a thorough inspection you cannot find any other signs of termite attack, the baiting option is closed yet the colony is still “out there”. You should place Monitors around the perimeter and inspect the building every three months for the first year so you can pick up activity before there’s significant damage. If live termites are detected in either the building or the monitors, the baiting option reopens.