I believe that soybean meal should be applied at a max of 15 lbs per thousand sq ft. That means you should have used 75 lbs. for 5,000 sq ft.

15 lbs of soybean x 7% nitrogen = 1.05 lbs of nitrogen per 1000 sq ft.

I have applied soybean meal at 20 lbs per 1000 sqft with no ill effects

Generally, 20 lbs of a meal per thousand shouldn't smoother the grass, which is what you are describing. But, sometimes the application isn't even with overlapping, etc. and product does vary.

My suggestion would be to let it dry and rake it in. Then water it in. The next time you might break you application in to two applications and if it looks to be heavy enough to smoother, rake in any area that looks to be smoothered right after application.

What type of spreader did you use? At that rate you should need to be on your hands and knees to see multiple particles of the meal. Something is wrong.