The Infusion should release by pulling down not up. Your swivel cleat may be wrong side up. Mine goes through a block on the trampoline after the cleat allowing it to be uncleated from the port side easily by pulling through the block. Mounted correctly there is no way that it could accidentally recleat itself. We have had the cleat on the mast since we started sailing F18s and like it. I do not use Spinlocks for halyards I have broken too many in that application. I use spinlocks for Cunningham as they are so easy to undo when loaded hard.