1994 Warres Vintage Port

[FRizzo]

Hi, I'm in a sort of a dilemma I recently purchased a product called Clef Du Vin http://www.wineenthusiast.com/templates/ClefDuVin.asp?1=1&uid=76BE27F3-007D-4FB9-A02D-9E003D78D9DB&Promo=&emsg=0&emsg=0
as I love Port and this product seemed perfect for using on newer vintage ports. I tried it last night on a bottle of 1994 Warres Vintage Port and had this result: I decanted the wine and used the Clef Du Vin for 10 seconds in my glass with great results then I decided to use the Clef Du Vin in the decanter for 50 seconds as I figured there were 5 glasses left in the decanter and 10 seconds per glass seemed to work well before (so I thought). At 50 seconds the remaining wine in the decanter tasted spoiled. My question is: Is there anyone who has experienced this and is there anything I can do to save the remaining wine. I have as yet not been able to get in touch with Clef du Vin.