Is LeAnn Rimes heading down a slippery slope -- once again -- with her Twitter rants?

The 30-year-old country star, who checked into rehab for “emotional issues” in August 2012 after a Twitter war with one of her followers exploded, sounded off against her haters on the social media site Thursday – and Breaking Celebrity News has the details.

“Supporting other step moms is not putting down bio moms,” LeAnn ranted. “Some people serious