Sacramento – Blaming a punishing economy, the Sycuan band of El Cajon on Thursday walked away from a multibillion-dollar gambling agreement that it had pursued for years and spent USD 6 million to defend. The deal authorized an expansion from 2,000 slots the tribe now operates to as many as 5,000 machines plus an option for a second, off-reservation casino on newly acquired lands that include the former Singing Hills Country Club.