Yes,technically it is un-Islamic,worshiping any entity other than GOD is un-Islamic as even the most deviant Muslim will tell you. And its not just the Muslims,every monotheistic creed would have problem accepting it. The SGPC for instance has taken a stand against it.1 and so have many Christian groups.2 In fact, almost all non-Hindus would have a problem with it if they are true to their creed, after all, as Rabindranath Tagore said in his letter to Netaji -
"Of course Bankimchandra does show Durga to be inseparably united with Bengal in the end,(emphasis mine) but no Mussulman [Muslim], christians and Arya Samajis can be expected patriotically to worship the ten-handed deity as 'Swadesh' [the nation]. This year many of the special [Durga] Puja numbers of our magazines have quoted verses from Vande Mataram - proof that the editors take the song to be a hymn to Durga".3
If that leaves any doubt, let us not forget that reinvention of this controversy is always politically motivated. Vande Mataram was part of the book Anandamatha which, as everybody knows, is a cornerstone of aggressive Hindu nationalism. It contains fierce anti-Muslim remarks more than anti-British remarks, in fact, in the final chapter the British are described as friends and the mission successful as the "Muslim power is destroyed"4. When the Sangh Parivar's insists that the Muslims sing Vande Mataram, it becomes a weapon for imposing communal ego, a national song should bind the population, not divide them!
Yet, i do not think AR Rahman composed one of the most popular rendition of Vande Mataram under coercion, neither have i been forced to hum it, which i have done countless times anyway! What most people do not understand (including the saffronites) is that the world has changed in the last 100 years and so has the Indian's sense of identity and the definition of words and concepts. It is interesting to note that AR Rehman seems to equate the words Vande Mataram with Maa Tujhe Salaam. Semantically, these two terms stand quite opposed! While the word Vande has been translated as "obeisance" or "bow", the Arabic word "salam" essentially means "peace". There is no way you can worship an entity and send blessing to it too.
But AR Rahman cannot be considered absolutely wrong, as of, now the meanings of the words have undergone drastic changes. For instance, the movie title "Salam-Namaste" seems to make the same *mistake*, wishing peace is never the same as bowing down but the fact the connotation of certain words have changed drastically through use and disuse. "Salaam" is now understood to mean "paying respect" while i have come across a very few people say "namaste" and actually bow down to show the same gesture that the word connotes. The word "namaste" is today used more as gesture of sending good wishes rather than prostrating.
If some people with vested interests did not keep reigniting the controversy, we might have never noticed when we adopted and have taken to singing it. The Jamait moving the resolution was very uncalled for. This organization has in recent past done commendable jobs especially against terrorism but by igniting the controversary it has shot itself in the foot. P Chidambram's presence further raises question; is the Congress trying to get back its Muslim votebank ? Currently, the Muslim vote is too fragmented, the main opposition, the BJP seems to be on a downward spiral,but not down enough not protest rather aggressively which might actually lead to a consolidation of Muslim votes and given the state of affairs,leaders like parties like BSP and SP would have little to offer to the Muslims.