Are the guides plastic?
If so, how proficient at light fabrication are you?
As long as the chain has not put a hole into the cover it will be fine. Just put some REAL guides back into it.
Read this post
And this thread but go down a little then it starts
I'd say a vise, a hacksaw and some determination would end the plastic guides going back into my truck. I have never seen the plastic guide on the slack side break so at the very least get the tension side. They always break.