Magnet on a metal rod slipped in to the trans shaft from clutch side. If it doesn't come that easy.... The rod has mushroomed on the actuator side and there is only one solution. Surprise, split the cases! Could have been done and back together by now.
Don't let it scare you. You literally have three big pieces inside there. Lift the top case off and there are two trans clusters and the crank. Lift it all straight up and out and don't pull any of it apart. Just inspect it all. Maybe pull bearings off one at a time to feel if they are sloppy. Remove the rod and ball then clean parts as best as possible. Get a case of brake parts cleaner if you don't have a parts washer. Lay it all out on a clean rag/towel and spray it down till the fluid comes off clear. Clean the cases' mating surface with acetone to remove old sealant. Grease the bearings one at a time and drop the trans clusters back in. There will be pretty obvious grooves on the transmission where you line up the shift forks. Then drop the crank in. Now run a micro bead of sealer over the bottom case half surface. Drop the top on and start checking that your NEW case seals are still in place, same with little pins on the factory crank bearings. If all is well, start the torque procedure and move on to the top end or clutch and stator .