Thanks @Sceleris , in re-reading the move steps for charging I notice something else interesting.
Note the wording of the move steps includes both ‘ordinals’ “first” implying sequence and ‘exceptions’ “may, if necessary”, and “if”.
This raises some interesting questions for me about the route smaller units take when making contact with larger ones generally. Isn’t it funny how the core mechanics can still give you a surprise!
Applying to the case in point:
The “most direct route” for the Goblin Spitters to the Knight Horde is indicated in red. In order to execute this move the unit would have to pivot. Indeed paragraph two states “in order to do this they may,”
But, there is a condition, “if necessary”. In this case, it is not ,as indicated by the blue line.
Therefore, we apply the last rule of paragraph two, “if the charge can be completed without the pivot, then the unit should not pivot.”
I read this to mean the goblins should follow the blue route until they contact the Knights, then align, then shuffle to get as close to knights leader-point as possible, avoiding the Yielding unit?
If this is a correct interpretation it has implications for how you might position units to avoid passing through terrain on chargers. Keep and eye on the straightest route