In a documentary on VTM (Belgian channel) he said that if the fracture had been 1 millimeter more to one side, he would have been paralyzed (according to what doctors told him). He was also lucky that they found a small artery that had burst with the scan.
His "shoulder wipe" victory move was something he picked up from a Michael Jackson choreography (Dangerous), of who he was a huge fan as a kid (even going to carnival stores to buy Michael Jackson clothes and doing local dance competitions with Michael Jackson moves etc). He didn't mean it as a dig towards other riders.
During the recon of Lombardia, he was joking (on video) about turning on the GPS of his smartphone, so that they could find him if he were to die on the Sormano