I am thinking the same.

BNM is requiring banks to up their reserve ratio, which will reduce money supply.
I "speculate" they will then print money to increase back the supply to as is.
In such case, interest rate is best left untouched, or increase very little.
This way, everything looks status quo, bank profitability/aggressiveness drops a little, govt get more
money due to printing, and the public hardly noticed what has just happened. Damn smart.