4wd issue

This weekend we got hit with a heavy dumping of snow and this morning before work sure enough the plow truck out at my place is in the ditch. Titan to the rescue again. I clicked it in 4lo and pulled the guy out with the front tow hooks. I switched it to 4 high to continue on my way. The 4lo light started flashing. I drove around a bit and I switched it to 2wheel. Then the 4wd warning light came on and a red at light came on and the little indicator at beside the mileage went out. I turned the truck on and off a couple times, drove a bit turned it back in 4x4 and ta da back to normal.
Should I be concerned? Did I mess anything up? It was like lost an confused as to what mode it was suppose to be in.