You could remove the servotronic relay, you will still have power steering but not the low speed assist. I had a faulty relay so drove my A4 without one for a few weeks, it felt heavy to start with but I got used to it pretty quickly and quite liked it.
Once the new relay was fitted it felt too light, thinking of maybe pulling it again and getting a few quid back on ebay.
Another option may be to try a different relay, I think they are interchangeable between models and have different characteristics.