.there's a guy on AudiWorld who claims to have the ability to restore the tune on a 8spd Aisin (yrk2.7t@curbside), or alternatively you can find a salvage TCM w/same part number on ebay or something.. put it in, get it fixed, then put your original back..
I'm probably going to get mine finally fixed in the next few months, then use the money to buy a stage 2 tune, dpf/scr/egr delete, get the TCM fixed and then put on a front runner roof rack so I can carry a full sized spare and mount my ham antenna.. and still have some cash to burn.
I would highly advise against getting the 'fix' - this is not reversible. Also you will probably have issues plugging in a used TCM / ECU as they are programed to each car based on options selected. The TCM / ECU hardware may look the same, the software is not. Then, as I said above -
. Issue with 'tunes' is that I have never seen one that addresses both the engine tune & transmission.
. Then there is the issue of whether the tune is for Pre or Post fix.