I don't know what she actually "confessed" to about the paddle, especially since LE twisted her words about taking the plug out into an admission that she had maliciously "tampered" with his boat.
But.... context, again. His boat takes on water and becomes too unstable to control. He flips over, and comes out of the boat. The water is extremely cold, and the first moments of full immersion are literally stunning, a shock to his system.
He either held onto his paddle or let it go in those few moments. If he held onto it, there is no way she could have taken it away from him, short of hitting him hard on his head or hands with her own paddle, and neither area is where the ME found bruising or abrasions.
IMO it's clear he let go of the paddle when he first went over (common) , or after a short while, when either hypothermia made it impossible to hold onto, or when he let go of it on purpose because it served no purpose to hold onto. (What he would have reached for, if he could think clearly and follow through, was the loop at the end of his boat. Holding onto that would help him float and would have been instinct to do for any experienced paddler).
A paddle is not a flotation device. It doesn't and can't do anything to help one stay afloat or to keep yr head above water. The only reason to hold into a paddle if you've come out of yr boat in the water is because chasing it downstream is a lot of work.
Which brings up the other obvious problem with this "confession" that she moved his paddle away from him. Once he let go of his paddle, it didn't stay near him. The river current would have taken it pretty quickly downstream....no extra help required to keep it away from him, even if any purpose was served to keep it away from him, and there simply wasn't any.