Terrible miscue at the end from Allan Lamb’s partner? (4,5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

definition: mint sauce is a common accompaniment/partner for lamb dishes anagram/”Terrible” of (miscue at n )*, with the n as “the end from Alla- n ” for the surface, Allan Lamb was a cricketer, so the surface could describe a miscue from his batting partner