Almost positively, certainly, no. Heart rhythm defects are electrical. Statins do not affect your hearts electrical conductivity or the origins of any impulses, they being the SA node and the AV node.

Heart electrical disorders come from damaged substrate in the myocardium, including from disease and from structural changes such as mitral valve or aortic valve degradations. They can come from occluded feeder vasculature that leaves certain areas dead and unable to help with the pumping processes. That puts a strain on other musculature and causes morphology changes, including prolapses of the mitral valve in some cases. Cardiac muscles that have to take up some slack change shape and dimension, which can cause fibrosis and valve problems. Atrial enlargement is a common result of prolonged supraventricular tachycardias of all kinds. This enlargement also encourages mitral valve prolapse, but also even more fibrosis. A fibrotic heart is a diseased heart, and it will probably succumb in time to an arrythmia.

Statins aren't to blame here.