You definately did the right thing! I commend you for your braveness! I would've done the same thing...goodness, everytime I see a dog left in a car on a hot day, I want to call the SPCA or whom ever...
You saved those poor animals from people who don't even know how to care for anyone but themselves...if they even do that!
Don't question your decision..it was a great one!
Way to go. I hope the both of them find new homes and are happier then they were!