The article linked said:
However, they need strong enough evidence and a strong enough argument to overturn the panel's original verdict. But even if unsuccessful, the governing body feel they need to send a message supporting their officials as well as the Head Contact Process.
I'll play lawyer, here's some supporting evidence:
Reverse angle shows clear prep to deliver a shoulder charge, drops his arm to open the shoulder, drives through with said shoulder, into the head of Wales Player. Both of Farrell's feet actually leave the ground just after the impact as he lengthens his body upwards, showing intent to hit with force.
Re the 'mitigation' of Basham being moved by George, he is moved, but is moved towards Farrell's outside shoulder, which he didn't' use to deliver the hit, but repositioned his body to ensure he delivered the hit with his inside shoulder, which was prepped and ready to deliver the tackle he delivered.
He's done it before, is likely do it again, and previous attempt at rehabilitation have proved useless.
Entry point: 6 weeks
Priors: 4 weeks
Apology and Fine: minus 1 week
Total: 9 week ban, with 12 months suspended sentence in case of reoffence within next 10 years.
Images courtesy 4:29 to 4:35 of this video -
(primarily watched for imagery of said tackle, not in support of the corruption claims, your honour)