Neither of those things would cause a car to steer hard right suddenly. Seriously, if you've got a car that all of a sudden steers itself hard to the right all by itself, you need to get the entire system professionally checked out. Do you feel any roughness or surging in the steering rack when you turn lock to lock? I don't know what loose struts means. I do know about worn strut plates. They're the upper mounts that have a flat bearing in them that allows them to pivot to steer the car. If they're worn, you'll feel and hear roughness when you turn lock to lock. Struts should not be loose. They're like motorcycle forks in that they are bushed high and low to be solid against side forces. If you can wiggle a tire, that's pretty bad on a car with McPherson Strut suspension. It would have to be seriously loose to cause the deadly condition you're talking about.