I don't think they will replace MAA-BRU flight. One of my buddy travels JFK-MAA regularly and according to him MAA-BRU flight is always full. Also they have lot of spare 332 after they reduced capacity on DEL-SIN, MAA-SIN.
According to my calculation they have 10 332's and they use 4 of them on DEL-BRU-YYZ & MAA-BRU-JFK. The only other routes that gets a 332 are BOM-HKG & BOM-SIN so they have atleast 4 spare 332's. Also they should have a couple of spare 77W's as well.