The VCF site isn’t loading for me right now so I can’t see exactly what they said, but I’m hoping they interpreted events wrongly. One of things that would annoy me about it would be that it wouldn’t be consistent for Gepetto to get his child back as a child to make up for those lost years, because they surely won’t do the same for Bae and Rumple, or Emma and the Charmings, or even Henry and Emma.
Also, August has things he needs to be held accountable for, and I doubt they could wrap that all up properly in one ep, and if he reverts to being a kid, then that can’t all be properly resolved.
It’d be disappointing on multiple levels if they go that route with the character, so here’s hoping it won’t be the case.