couldn't stop flying with the eletra

When I upgraded to Pre-reliese 1 my world was so laggy I could barely pick up items, and I couldn't activate my eletra. when it finally did activate I used 1 flight duration 3 rocket and then I couldn't slow down I just race along at top eletra speed. I took off my eletra but that didn't even help. PLEASE FIX THIS BEFORE RELIESE