Dispatcher reported that during pushback a ramp crew positioned the aircraft too close to another aircraft at an adjacent gate requiring the ramp manager to stop the push suddenly to prevent a collision.

Narrative

At around XA:35L; the ramp crew pushing the flight in question (B777-300) was instructed to push back onto spot (dashed line). However; during the pushback process; the B777-300 aircraft was inadvertently aligned onto the RH side (solid line) and ended up positioned too close to a parked B757 aircraft at gate. The situation escalated as the ramp manager; who was monitoring the frequency; had to intervene urgently to prevent a potential collision. The ramp manager instructed the crew of the B777 to immediately stop the pushback and requested them to pull back and redo the pushback procedure to correctly position the aircraft at the spot. This required the B777 crew to make necessary adjustments to ensure the aircraft's proper alignment.Consequently; two additional aircraft were conditioned to pushback behind the B777-300 and had to hold their positions until the ramp crew successfully maneuvered the widebody to the spot. This delay resulted in some disruption to the flow of pushback operations on the ramp. In response to this incident; ramp supervisor at the company Tower was notified; and the information was provided to the manager on duty at the ramp for follow up. Per supervisor; they will review pushback procedures with lead assigned to this Gate/Zone to ensure alignment accuracy during future pushback operations. This may include further training; procedural enhancements; or additional communication measures to enhance the safety of pushback operations.