Part of that new ball game is that sometimes the ship doesn’t pay proper attention to where the canyon walls and can destroy it self by repeated collisions, though that is pretty rare nowadays.Also, you could, if you feel brave, dismiss your ship then recall it, then retry boarding it *
* However, if you're sitting at the bottom of a deep canyon and your ship lands in an place you can't get to... that's a whole new ball game.
I vote for the too much cargo in the SRV to fit in the ship reason for the can’t board issue.