Welcome to the forum. How much mud got thrown around under the hood? Is it possible that you blinded your TPS (throttle position sensor) with mud?

Just for future reference, if you ever think that there's any chance that you've sucked water into your engine letting it sit will not help you. Pull the plugs, spin it over to expel any liquid, then replace the plugs and start. If you crank the engine with liquid in one or more cylinders you'll bend rods big time. Many of the newer vehicles have a start circuit where the starter engages, and remains engaged until start, or some programmed number of revolutions. If you hydraulic lock one of those (like a Jeep JK) the starter hits, bends rods, then smokes the wiring harness trying to get the rev count. I witnessed that when a guy behind me thought it would be cool to blast into the creek that was about 3' deep....