I do not believe he has, but as Ong Teng Cheong has highlighted before, it is not an area that is neglected by the presidency. It is a major cornerstone in the duties of the president.
As for asmospi's comments, well, I happen to think that it is a good move on the government's part to not use reserves during economic downturns. Face it, we'll always have economical downturns. The reserves are not an endless supply of $$ - the country does not spend decades accumulating reserves for it to be used up in 4 years. If we are attacked, we do not have natural reserves like Kuwait or Iraq for anyone to be interested in rebuilding the country for us. We would have to start from scratch all over again, and starting from scratch in the 21st century is a lot harder than back in the 1960s.
It takes a lot of political guts to perform such an unpopular move. The easy way out for a weak government would have been to use the reserves.