i had also put a spiral in the secondary with it...i actually taste tested this and it tasted great! i figured that a couple more days in the secondary will be ok.. then i kegged it and then grapefriut flavors came thru
I recently brewed a brown IPA, fermented it for bout 10 days at 65 degrees, then secondary for about a week. kegged it ...it tastes like grapefruit juice!
I know that some hops impart flavors like this but it is really bitter...
you probably need more info such as hops selection, method...