Markets are finding their footing on Monday morning but AST Spacemobile (ASTS) really came "down to Earth," says Diane King Hall. She explains why the company is de-orbiting BlueBird 7 and turns to the stark selling action in the space company. Qorvo (QRVO) and Skyworks (SWKS) added to downward momentum after Mizuho downgraded both stocks. Diane later notes a winner in SanDisk (SNDK) after Walls Fargo sharply raised its price target.