2 easy obstruction questions

[youngump]

Originally Posted by IRISHMAFIA

It may allow the BR to approach the base faster, but a sharp turn off the base is still irrelevant to an OBS call or non-call.

I feel like reading this there may be some confusion about your position.
Do you disagree with any of this:
F4 standing right behind first, BR before reaching first has to slow or slide because if she doesn't she'll crash through F4 when she runs through the base. Obstruction.
F4 standing right behind first, BR after reaching first without deviation has to contort her body and dive into foul territory to avoid creaming F4. Not obstruction. (This could be obstruction if BR tries to reach 2nd)