Pre-soaking will remove most of the anti-halation layer, although this is not strictly necessary. Fomapan 200 is a very delicate emulsion, prone to scratches and handling defects. I find it impossible to avoid micro-scratches, although I've discovered that using plain water instead of a stop bath somewhat reduces this problem. If you have white specks on your film, try to mix your developer in demineralised water.
It's a real pity. Fomapan 200 is a lovely film, why can't they make eliminate the scratching defects?