someone tried to nik my wheels ages ago, knaked the bolt head so was imposible to get out, in the end i had to drill down the centre of the bolt so the wall wasnt as thick/strong. took out two more bolts and undid the two that were left in not knakerd then drove around in circles at about 20mph untill the one bolt snaped. still took a good while.
one bolt = alot less stronger than 4 bolts. youle be fine.
however as said sounds like theyle be back tonight