Have you graduated already and obtained your Ohio license? I heard they don't hire unless you have your license. If that's not true, then I'll be glad I don't have to wait until June to apply (I graduate in May).
In my opinion failing a check off and not being able to redo it is not very effective. I question why your program thinks this is the best way to do things. My advice would be to accept the failure and practice in the lab so it doesn't happen again. Maybe work on time management since you mentioned you ran out of time. Faculty should be willing to help you. Keep in mind you pay their salary!
Yes, after my freshman year of college I had a 2.6 cumulative GPA. My advisor told me I'd never make it and could barely declare I was a nursing major. That was just what I needed to light a fire under my bottom. I've made almost all As since then and I'm graduating with a 3.5.