sounds to me like transplant shock or enviromental shock. i had 3 do that last time i bought clones ( i believe they were running their clones on 24/7 light. i run mine on 24 hour light). what probably happened is when you transplanted them, combined with them going on outside light and climate change, it shocked them some, plus the change in lights gott them thinking its time to flower. just let them continue. with the days going longer they will go back to veg in a couple of weeks.