Will this affect russia, of course, but if their level of inflation is rampant then so is the rest of the world.
Russia will likely deindustralise, but so will much of Europe, and even more so if Russia turned off the gas tomorrow. Remember this, russia could grind Europe to halt if it cut off the gas, which would be on top of an economic crisis that is already looking pretty bad. There is no alternative to the piped gas for Europe that's fact in any realistic time frame, no infrastructure plus the price would be at an extreme premium (piped gas is very cheap).