What are you smoking? Germany is the one that attacked the USSR. I can hardly see how they'll remain anything but allies after that. Actually Germany didn't just attack, they prepared and executed the largest invasion in human history.
> I think China will do a switcheroo on Russia
China is not going to do a switcheroo on Russia. If it wanted to, it'd wait until Russia is exhausted/broken and invade/recover the lands it used to historically belong to them (+resources that come along). Instead, they want Russia to remain as an annoyance to the West.
China is never aligning with the West. They won after WWII and the West tried to break into them in two wars (Korean and Vietnamese) to no avail. They'll fight till the end.