LarrySellerz threads are always .... Interesting.

This part: "The front shifter on my road bike stopped working after the bike sat for a month+ without use and the bike is stuck in the big ring." makes absolutely no sense. I have a rack of bikes and I sometimes don't rise one for many months. I pull one down, air up the tires, do a shake-and-rattle test, check the brakes, and ride. Derailleurs never fail to shift. Never in more than five decades.

So ... what is the Real story?

I thought you were okay with the guys at the shop because your father bought a bike there or something .... ride down there and ask them. They can answer while still working on other folks' bikes .... tell you cross-chaining is okay and also suggest what you might have done to the derailleur.

What have You tried to do with the derailleur?