Sounds like you ran well and were fine with the rain and the gear!
The rain and mud were fine - fun, even! I turned my ankle in Zion two weeks ago and I'm still feeling it enough to make me cautious in an area where rocks and roots are hidden under a layer of wet leaves. There were also fallen trees to scramble over in a few places but I can see the park workers have been out with their chain saws so that should be fixed soon. I'm hoping to design some hilly routes in this park that I can do regularly since it's close to home.