Does it have any cold drafts? What are your temperatures? Do you by any chance know what your humidity is like? (if not, where do you live? It's not necessary to give your specific location, or anything, just so we can have an idea what your RH (relative humidity) is like... ie, I live in NC, where we have great humidity.. But, out in Wyoming, for example... Not so much). It may also just not have the energy to finish blooming a second time... Phals are forced to bloom before being sent to the store you buy them from, and often, they don't have much stored up energy to re-bloom off of another node on the spike it came with (which is what sounds like its doing). You may just want to cut it all off, down to the bottom (within an inch of the base) and let it rest, that may be what it is trying to do for itself. I know what you are describing, so you don't have to post pics. If you do, you have to have 5 posts before the site will let you post pics... But they aren't necessary in this case, IMHO.
I have heard from members who have actually used them, that the fertilizer sticks don't work too well... I've not tried them. But, I don't think fert has anything to do with your problem, although, it is important.
Watering with a can is fine, just make sure you don't leave water in the crown (the area the leaves grow from), better yet, don't get water there in the first place
but, using a watering can is fine.
Try only adding a little water, if it's in moss (not saturating the moss - they don't like soggy "feet")... If its in bark chunks, then water til the water flushes out of the bottom.