Well, since savage doesn't use a one piece bolt handle and shaft (like a Mauser) it likely isn't a SAFETY issue... but is a pain in the keister...
I've been shooting a Savage 100E in 30-06 since 1985... bought it used, and have fired thousands upon thousands of rounds through it... and never a hickup... no cracks like that!
My bet is on a 1 time problem... (not a "stress under fire" area of the gun!) Savage will make it right with you, and I'll wager that it won't happen again...