Here's a news article with updates on Sid's story. The family is filing a one million dollar lawsuit against Dr. Tierce. I haven't read the lawsuit yet, but the article links to it:
Dog's Family Files $1 Million Lawsuit Against Vet Who Kept Pet Secretly Alive | NBC 5 Dallas-Fort Worth
Also, today Dr. Tierce goes before the Texas state veterinary board for a final decision on his license to practice.