I'm sure he meant 1.03 and 1.025, otherwise his entire tank would be dead.
I'd imagine that your button polyps will be ok, but no guarantees of course. My salinity has been up into the 1.03-'s before with little harm done to the tank. Button polyps and zoanthids IME are extremely hardy, and since you're dealing with button polyps I'd advise feeding them mysis or enriched brine to hold them over until they regain the ability to support themselves.