I feel India got an excellent deal. I think India should immediately operationalize the treaty, Hyde act notwithstanding. There will be no problem as long as we are allied with the US and given our recent prosperity is due to economic ties with US, there is no reason not to choose the alliance.
Having said that, India is a democracy and parliament should reign supreme. Unfortunately the framer of the constitution did not grant any power to the parliament to ratify or abrogate treaties.
Dr.Singh will need political courage to face the consequence of operationalizing the treaty over the objection of the left. There are times when you have to uphold principle over expediency.