Hi!
to the OB! I'm sure you will love hanging out here, and learning. Everyone here, is really nice, and loves to help!
Sometimes, the leaves never recover. You might want to repot this guy, and check out the roots... It should be fine, most Phal hybrids are fine with being repotted while in bloom. If you choose to wait, then I'd suggest not watering it until the medium is almost dry. Try searching the "skewer method" here on the OB, it can help you with knowing when to water. Everyone's conditions are different, and media dries at different rates, based on how old or new the medium is, so you can't just say, oh "water this phal once a week", because even week to week, media dries differently (sometimes its hotter one week than another, humidity changes). So, it may be that it was underwatered, or it may have been overwatered, and have root rot... There's no way to know, unless you unpot it.