If you aren't setup for handling the eggs you should try and move the other fish to another tank and leave the pair in there (I know, kind of unreasonable). If this is their first spawn they will likely just eat the eggs themselves anyways, as it usually takes them a few times to get it right. But the best recipe for success would be to remove any wild cards ie other angels, plecos, predators and let the pair do their thing. Then feed them well and in variety (don't over feed) and keep up a weekly water change and within a couple weeks they will spawn again. A cooler, or cold water change was what set things off for me, but all can be different.