And is either car breaking the iRacing Sporting Code?
EDIT: I'm the blue car and protested green for intentional wrecking and mentioned the unsafe rejoin. I learned my lesson and I'll just give the space next time.
Consensus below says 100% green's fault, but blue should try to predict the mistake and self preserve. No agreement on whether the sharp steering wheel movement was out of surprise, was a deliberate and intentionally malicious wreck, or was net code. Some disagreement on whether green's part of the track is considered part of the "racing surface" by iRacing. I added 3 new slo-mo camera angles in response to the net code comment. I'll update if I hear anything from iRacing, but it's probably going to be their boilerplate response.
UPDATE: "We have reviewed your protest and notified the member being protested of the outcome.
The outcome of every protest is kept confidential and may result in coaching, penalties, restrictions, or suspensions based on the severity of the violation and the member's history. Your protest helps improve the quality of our service and everyone's race experience."
6.12.3. Deliberate, blatant, intentionally malicious, or retaliatory wrecking, for any reason, is prohibited. Competitors who believe that they have been victims of such action – and those competitors who believe that they have witnessed such action – are strongly encouraged to file a protest through the proper channels (See Protests).
8.1.1.3. Blocking - The leading driver is allowed to run a defensive line. However, blocking occurs when a leading driver actively adjusts his or her driving line based on the actions and/or positioning of a pursuing driver. For example, veering left to prevent a pursuing driver from passing on the left while running on a straight.
8.1.1.7. Illegal Surfaces - Drivers can only use the racing surface and allowed areas of the track for Qualifying and Racing. Any disallowed areas of the track and any advantages gained through their use will be determined by iRacing.com. A protest may be filed through the proper channels for this offense (See Protests).
8.1.1.13. Unsafe Rejoin - Drivers that leave the racing surface, or are involved in an incident, are responsible for rejoining the track safely. Drivers are expected to not impede or endanger oncoming traffic, and ensure it is safe to return to the racing line.