Honestly, If the Snipe has quality scans and translations, and buys their own scans... it's not a huge deal. It just means that the other scan group could either move on to another project or continue with it if they feel comfortable with doing so. There isn't a need to get ones.. 'panties in a bunch'.
Not to mention... the scan groups are already walking a fine line. The idea of a user getting upset over something else translating it, shouldn't be a full out drama show. This could result in the entire translation being shut down, and/or legal action from the artist if they catch wind of this. After all, they aren't exactly legal.