Question about offset tank side

[Coldwater]

A while ago I bought a 112 gallon from some dude in the buy, sell and trade. Not until recently had I noticed that one of the sides (not the front or back) panes of glass has about one millimeter of glass sticking out. To me it looks like someone took the tank apart and then tried to silicon it back together but failed. My question is will it be safe to turn into an aquarium (I have a Beardie in it right now) or will I have to take it in to be taken apart and re-siliconed. The tank has an aluminum center brace if that matters at all. I can throw some pictures up here if that helps.

Matt