Yes Phil, I see agents doing it all the time, but it  is not legal, that document will not stand in the court. I am surprised that it is coming from a broker. I have closed the transactions for my clients, and signed for them but only after having an official power of attorney to complete the transaction.

http://www.namneet.com

Why in the world would you ever sign a legal document on behalf of someone else, without the exception of a Power of Attorney.       You are put yourself at risk for so much liability.  I would have done exactly what you did Phil, I would never take a signature from an agent with a seller/buyer verbal authorization.  With so much technology, she could have scanned the document and emailed to the client or fax it to them for their signature.   I call it laziness and legally wrong.  

I am with you Phil, I would have ensured that I had the seller's signature, not the agent.  Can't believe she thinks this is common practice.  She must save herself alot of driving, faxing, etc, but could bring herself a lawsuit at some point.  Good for you for standing your ground and covering your buyers cleints and your "assets".

Never never would I sign for either party. Gads, what's wrong with people. Yes, my life would be alot easier if I didn't have to color inside the lines too, sometimes we have to educate other agents as we go.

Seller's signature a must, I would not accepted something signed by the agent,  You did a great job for your clients I hope they know that!

I once had a buyers agent initial contract changes right in front of me. I said I would not accept the contracts and proceeded to tear them up. I then got a call from her broker the next day asking why I did what I did. I told him that I would not be a party to illegal activity and asked if he felt her actions where acceptable. She came back that evening with new contracts fully executed by her buyer/client.