Y, he fucked up this time. But thats happened cause he alrdy knew that he will leave the team.
Ofc this is just my teory, but was very clear at the moment that he will not attempt to get the VISA on time for the majority of events of this start of the season, so he's just with angry when thorin said it. Thats not excuse to be stupid again, i know... but hey, no one here knows what he's passing through, his feelings... Just empathize and move on!
The guy worked hard for be on the major, to pay for his old "sins". Then the sh1t with VISa happens (maybe for his fault too, dunno), fews day later a guy that is not your friend come to say bullshits on internet about you and YOUR FRIENDS. Oh boy... thats not the right moment to make jokes. Now, imagine if my teory was right and he alrdy knew that the team will replace him for the start of the season....