It is a problem with the Encores so I assume it could be with the G2 since they are similar designs. They seem to crack at the wrist.
My wife had one break and I know a few others that have had the same problem. One guy I know had a composite break when he fired a 300 Win Mag, left a bruise.
TC will replace it under warranty. On my wifes they were out of walnuts and since it was in the middle of hunting season they sent me a composite and then when they got the walnut in stock they sent it to me and I sent the composite back.