Parabellum - wise words.
Our information is that at least one guy has done just as you stated. A reasoned argument and he surrendered his bank guarantee but was released from the remainder of the bond - and I believe he was only a year or so on line.
That is obviously the first and preferred approach but one needs to have plan (b) ready to go imho.
We will be sitting on the fence waiting for promised improvements to materialise
whilst keeping options open elsewhere