If the old seal developed a big crack, a lot of oil will flow out--not spray out with high pressure. There is not supposed to be any significant pressure against that seal. If there is/was and oil sprayed all over everything and not just drooled out--you have an internal seal failure.

Real easy to replace the input shaft seal and pitman shaft seal. Just be careful not to scratch the shaft or bore. Remember to paint mark the coupling to put it back - centered. My 560 sel had a 'set screw' in the steering box to center the internal gear exactly for removal/reinstallation correctly without guessing.