Though, it is a sideslip but airplane actually doesn't slip in the direction of lower wing because of the crosswind pushing the airplane back on the desired track. This technique is not recommended by Airbus because the bank angle required to fly the steady sideslip is large and places the airplane close to the geometry and roll/rudder limits. Excessive bank angle close to the ground may lead to wing/engine scraping the ground.
While a sideslip is occurring, an airplane doesn't slide in the direction of the lower wing due to crosswind pushing it back onto its intended path. Airbus does not recommend this technique because it requires a large bank angle and puts the plane close to its limits for geometry and roll/rudder control. Excessive bank angle near the ground could cause the wings or engines to scrape against the surface.