Could a loose relay cause this?

Drove from Houston to Port Fourchon and I plugged the fuse back in and it worked fine until I went over some bumps on I10. Then it wouldn't shut off again (not that it was a bad thing since the dog was so dense). Hit another bump and it went back to normal. It would do this every so often.

I opened where the relay was located and it seemed a little loose so I unplugged and replugged it in. It's OK now but don't want to wake up tomorrow to find scratches on my windshield with the wipers going.

Thanks!