Bad break indeed. Good time to drop the pan and see how much of the flakes are there. Clean it good and do a slow check of everything you see. Be carefull when cleaning the old sealant. I usually use a automotive type putty knife, you also get them made of plastic. On the pan after cleaning use the alcohol to remove oil residue. When you apply sealant, use a thin beed and use a artist type paint brush to smooth it out over the plane of the pan, smooth it out to the outside and keep away from the inside edges. Do not torque any bolts until you get all of them in and snugged up a little. Some guys have all the fun.