"Should the TOE be falsified, would that lend any credence or support to ideas such as Biblical Creationism?"
That would depend on how ToE were falsified. A clear proof of creationism might falsify ToE, and would surely provide credence to creationism. However, such a proof seems unlikely.
If ToE were to be falsified, it is most likely that what would be shown is evidence that is contrary to some technical aspect of the processes assumed to be responsible for evolution. That kind of evidence would not prove creationism, and might merely require that ToE be modified to fit the new evidence.