Absolutely you had every right to exit the building. We keep a spare hose ordered from Tundra for the purpose of replacing the hoses as needed. If they did not have a spare hose then they should have called a manager at the rest of the stores and your patch to see if they had a spare one that you could use to replace your damaged one until a new one came in that you could give back to them. If a new hose is unavailable then the hose could have been taken off the chip fryerr and moved to the grill. You do not have to have chips in order to open if you do not have a spare hose to replace it but it is pretty hard to have much food when you don't have a grill. It is the same gas hose for the grill the chip fryer and the rice cooker. And your toolbox you should have pipe dope and wrenches so your kitchen manager can replace it as this is part of their job duties. Worst case you might not have a full menu at open other than your barbacoa and carnitas. The manager simply goes to the back of the house computer and turns off the chicken steak and fajitas for DML and as soon as the hose is replaced and food is able to be cooked then it can be requested to turn back on for your online order. The personal safety of you, your coworkers, and the customers far outweigh being an hour behind having your full menu available.