Have you pulled the washer out yet and make sure the drain pipe coming out of the washer is still in the drain pipe, and no leaks on the water lines going to the washer. It is sounding like the 1/1/2 drain plumbing the drain hose to the washer might have an obstruction. I had a damn mouse crawl up that pip[e and found it in the washer after I did a load. Or something internal of the washer, a hose or something has come loose. Just some ideas.
I have seen the water drain pump on the bottom of a washer crack before. Those things shake like crazy when on spin cycle.Pull the washer out as far as you can and run a cycle Ifs its the washer you will know real fast...
Realist - Everybody in America is soft, and hates conflict. The cure for this, both in politics and social life, is the same -- hardihood. Give them raw truth.