[j.r. guerra in s. tx.]

One time, I hit a bump in the road 'really really hard' and my motor mount cracked and gave way, shifting my engine in the compartment. I didn't know this, until I had stopped driving, and had great difficulty in shifting to 'Park'. I was puzzled, until I popped the hood and found my engine was leaning to one side - the car mechanic was amazed the car kept running.

Could it be possible that your transmission was jarred out of line?