The force is forehand. The disc is somewhere not too close to the sideline (#1), with a handler on the open side (#2)
The thrower (#1) squares up her hips to the open side handler (#2). The open side handler cuts directly behind the thrower.
#2 catches a very short pass as her momentum takes her towards the breakside
#1 clears space into the spot where #2 originally was, as #2 throws an open backhand to someone in the stack, before her mark can catch up.