i would probably remove all the chainrings and get a 52 tooth 110 BCD (if that's the size of you current crank and you REALLY need higher gears than you already have) and mount it on the inside of the spyder with singlespeed crankbolts (get at LBS).

you can just get the bolts and use them to remount your current outside chainring on the inside of the spyder and throw away the bent middle chainring and smallest chainring. this assumes you have a somewhat standard five bolt 110 BCD triple crank on there. it is hard to tell from the pic in the link and i can't google anything on "SR XR10 crank".

if this works for you, don't for get to toss that old FD and shifter .