I saw that video last night and thought the outcome couldn't be too good; later he posted on twitter injuries (which are noted on above link) - fortunately not too bad. Tomac could not have avoided him ... he didn't even remotely lose control of the bike when he hit Barcia.
I love how Barcia blames Pourcel for coming over on him.......and really Tomac controlled that impact from being a lot worse (yes I believe he rode it out/down smoothly over Barcia to lessen the hit). Riders off the hook like Barcia are great for the knock down drag out MX world, but for sure he remains a loose cannon in my opinion.