"This morning when I was informed by my union, the WGA, that it is considered struck work I walked out of my rehearsal. I have been and will always stand with my union members of the WGA, SAG and DGA."
"Beyond our union artists, I am sensitive to the many people impacted by the strike and I hope for a speedy and fair resolution, and to one day work again with all the wonderful people I met at DWTS who tolerated my dancing," he continued.
Walsh was set to dance with Koko Iwasaki on this season of DWTS, which Deadline also noted is going to push back it's premiere of the show. Walsh is a member of both the WGA and SAG, both of which are on strike.
Picketers were also targeting other contestants Oscar winner Mira Sorvino and How I Met Your Mother star Alyson Hannigan, who are also set to appear on the show this season.