Given the various types of stall available, from your basic straight level through to fully inverted stalls along with steep turns keeping the wings level is irrelevant. After the stick back pressure has been released part of the recovery is to get your wings level as the angle of attack is relaxes then power on and climb. There was an excellent article in Australian Flying about 5 years ago on the "stall stick theory".
For those that really want to stall grab yourself an instructor climb up to 4500agl slow down to just above stall, reef the stick back as far as your can cleanly then kick in a full boot of rudder and enjoy the ride, i repeat dont try this without an instructor.