I don't expect Shatkins to bend over backwards to rescue AA's baby, but I think it's a bit silly to assume they want to lose so they can redecorate to their own tastes. You have to think any executive would be thrilled to luck into a one-year window with a core of Tulo-Jose-JD-Edwin-Martin. It's a chance to win it all and without too many lasting contracts. If the ship sinks they're not really on the hook and can move things forward according to their own plan. If the team makes another amazing run, everyone wins and they can still move forward with their own plan.
And, TBH, I'm not sure why Gibby is so undesirable that you'd want to tank a whole f***in' season to get rid of the guy. I'll gladly accept his flaws (which do admittedly seem a bit egregious this year so far) for a 95-win club and a strong playoff run. Shatkins would prefer the team to win, because why would anyone want to fail or be the face of failure?