I would just keep them in there, as long as you feed them right and keep them waterd they will grow 1 month outdoor for each gallon you have or more. I have plants in 3g pots outdoors that have been in there since may and they are a nice healthy green>
if you still want to pull them out look at FDDs thread it can be done. I have seen people transplant in the middle of flowering outdoors, aside for wilting and a few weeks of shock the plants where OK and survived.