Yes, that is very bad luck. Normally statue resin is pretty durable, the leg should not break
that easily (especially when you where very careful).
My advice when a connection 'peg (resin) or pin (copper/steel)' from a statue doesn't fit (well), sand or file it smooth or slightly thinner. Most of the times only one side of peg already will do the trick..
A very good glue for resin parts is Zap-a-gap CA+