They certainly didn't expect this. What have environmentalists and concerned citizens been saying all this while? Taib and his cronies haven't been listening! They have been too busy raping the forests and the Penans and other natives as well and chasing them off their land while making BILLIONS for themselves! And they thought they could get away with it!
See also The Star "River disaster hits Sarawak" and Hornbill Unleashed "Log-jammed river disaster unfolding in Sarawak - Now in Sibu!".