Dear Dr. Sahib,
It is true that one of Allah's names is as-salam--because remembering Him makes gurantees peaceful hearts ). But word Salam just means peace. "Al" before the "salam" makes definitive noun, meaning "the peace". So here it is being used only in the meaning of a simple 'peace'. The word "Al-Mo'amin" is also Allah's name but the Qur'an uses "al-mo'mineen" for common believers also. The word "maula" is "protector" and it has been used for Allah--but it has also been used for the adopted sons (in the plural form--mawalee). Maula is also used for a client or freed slave and a non-Arab as well. Arabic language seems to be very exhaustive. The word "Kuffar" means "thankless people/disbelievers" but the Qur'an also uses this word for the farmers because they 'cover' the seed. Islam and al-Islam are almost synonmous. So that's why I do not see anything wrong with as-salam.