i just trimmed fan leaves off my big girl 2 days ago to let light to the lower buds and guess what my buds actually put on size no stunting i have honestly done 1 with and 1 without trimming and the 1 i trimmed to allow light produced more yield by over an ounce. but on the other side of that coin different strains mean different things, not all strains will act the same way i trimmed a different 1 than the other 2 and you where right it did stunt growth for a few days, it comes down to trial and error. some plants dont mind trimming while other do, know your strain is the best advice, and i dont cut fan leaves completely off, just trim an inch or so off to allow light to an undergrowth. i do not cut fan leaves off the stem just trim the fans themselves. there honestly is no right or wrong answer to the fan leave thing because all strains are different, and some guys go nuts with cutting which is not good either. gentle manicures, trimming 1 fan leaf to allow light to a few buds underneath for me has always worked really nice and i have gotten more yield, but i dont cut it completely off at the stem just an inch or 2 of the leaf itself.