Although no reason for the split was cited, it’s believed an interview featuring quotes from Askew’s management team, which questioned the team’s commitment to Askew’s well-being and caused embarrassment for both AMSP and IndyCar, did little to help the situation.

which interview in question would that be then?

Spire Sports + Entertainment, which represents Askew and was among those who pushed the driver to see a doctor, noted Arrow McLaren SP did not reveal that Askew was suffering from a concussion in its Thursday announcement he would miss next week's race.

“Oliver clearly demonstrated his talent until Lap 91 of the Indianapolis 500 and I hope this does not become another case study of why athletes do not tell their teams they are injured," said agent Jeff Dickerson. "The reason they do that is because more often times than not they are replaced. In motorsports, there is always somebody to replace you, and whether it was Dale Jr. or Oliver Askew, there is always another driver available.

“I hope this is not a barrier to progress for other drivers — especially young drivers afraid of losing their job — to notify their teams they are hurt. I hope the team proves me wrong because the good news is, the kid has had a head injury for the past month and has still run 14th in IndyCar."

No comments out of the ordinary IMO. It's a known issue, and maybe why drivers need to unionize? In any case, Schmidt drivers have been handled rather questionably twice within a year now - is the issue the team itself?