Here, the runner isn't out for leaving the runner's lane, he could be called out for leaving the baseline while a play is being made on him (unlikely because there was a collision) or for malicious contact in FED/NCAA. The only was I see a runner's lane violation is if it is blatantly obvious to U1 and everyone else in the park. PU should not be splitting hairs here though.
Here is an NCAA bulletin regarding the situation a similar situation. The situation is the first clip.