There are several places in the Torah where there is a "questionable" Kri / Ktiv anomaly. See Vayikra 18:27 as an example. There, the word is written as האל but there is a note stating that some pronounce it as האלה.
If a Ba'al Kri'ah does pronounce it as האלה, and a Gabai says that he should read it as האל, should the Ba'al Kri'ah make the correction? Is there a ruling such as a shul minhag regarding these types of anomalies and you need to follow the shul minhag?