Former Crewe midfielder Steven Schumacher suffered a nightmare return to Gresty Road as Bury slumped to a 3-0 defeat.
Schumacher was sent off for two bookable offences as goals from Shaun Miller, Dave Artell and Luke Murphy rocketed Crewe into ninth place.
Another former Alex man, Efe Sodje, also had a bad day. His mistake gifted Crewe the perfect start after just three minutes. The defender's block fell to the feet of Miller who drilled past Cameron Belford from 10 yards.
Clayton Donaldson was denied at the far post by Belford but the unmarked Artell doubled the Alex's lead with a powerful header from the resulting 18th-minute corner.
Belford then kept out another two Miller efforts with superb saves and recovered well to deny the youngster again after he spilled Ashley Westwood's shot.
Bury had little to offer in response with just two tame efforts from yet another former Crewe man Ryan Lowe and another fluffed chance from full-back Phil Picken.
Things got worse for the Shakers in the 62nd minute when Schumacher received a second yellow following a high challenge on Zola.
Murphy added a third goal, powering the ball into the top corner in the 71st minute, before Belford saved Donaldson's penalty after Nick Powell had been brought down in the box by Joe Skarz.
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