He's now the only NHL player to have had his contract bought out by 2 different teams.

According to Elliotte Friedman:

Some clarity here: Philadelphia put Tony DeAngelo on waivers to buy out his contract. It is not a termination. So, assuming he clears tomorrow, DeAngelo will be a free agent.

Just under 2 weeks after the Coyotes signed Galchenyuk, they've placed him on unconditional waivers to terminate his contract.

This article by Katie Strang has all the info known about the situation so far.