Pretty sure if this was untrue the club would have debunked it by now. Either some photos of him training on social media, or some kind of official media release. We've done as much in the past to deconfirm damaging stories.
Chammas has nothing to gain from lying about this. He is very close to the club, and would only damage that relationship by putting out fake news.
As for Jarome himself, I kinda imagine that making the decision to walk away from your childhood club would weigh pretty heavy. He may have needed a mental health day. He may have even told his management team to organise it with the club.
Or he may genuinely have the shits that the club is willing to waive the 10 day re-sign period. I'd understand that too.