Sudden reversal in magnetic field is the origin of switchback. The reconnecting field lines creates shear driven turbulence.
The origin of switchbacks is still under debate, but the possible mechanisms have been identified, which may explain the relationship between switchbacks and turbulence.
One famous theory is that switchbacks may be the result of MHD turbulence in the expanding solar wind. MHD theory suggests that the amplitude of the Alfvenic magnetic field fluctuations inside a radially expanding solar wind decays with R^{-3/2}, while Br ~ R^{-2}. This means that the fluctuations decay slower than Br. Therefore, the initial small fluctuation will develop into the formation of polarity reversal when its amplitude becomes larger than the background Br. You can refer to The MHD simulation works for more details:
Squire et al. ApJL, 891, L2
Shoda et al. ApJ, 915, 52
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