Jug believes Shashi Tharoor (ST) is a "tweet chap". I'm not sure. There could be more to ST's tweeting than meets the eye...but I'll leave that for another day. For now, let me question Jug's belief.
ST has the right to tweet and the right to disagree. However, as a minister, he has the obligation to retain in public, the sanctity of the governmental view on policies. In private (within the four walls that SM Krishna has mentioned), he has the obligation to criticize policy proposals and ensure that the country gets the right policies.
In his eagerness to use his rights, either he clearly has forgotten his obligations, or (worse), has discovered that his views and policy criticisms do not seem to matter.
There's nothing wrong in ST tweeting, nor is there anything wrong in the message itself. But there is clearly something wrong when a minister chooses to go the public route to criticize a policy. Either he is naive enough to be unaware of decision making loop (and hence is unable to contribute his valid positive criticism of the policies while they are still being prepared) or has not earned the trust of his fellow politicians so they disregard his criticism (even if it is presented well in advance of the public announcement of the policy).
Jug, you could do your old buddy a favor by reminding him of his obligations..and advise him on how to go about achieving his obligations. He clearly doesn't need any support for exercising his rights (and wrongs).