Any chance John wrote Revelation before the destruction of the temple?
Nope, impossible. He wrote from Patmos and Nero never sent anyone to Patmos. John was banished by Emperor Domician (81-95 A.D.) to the island of Patmos, where he wrote the Book of Revelations. According to Revelation 2/3 of all men will die prior to Christ's return. Satan has NOT been chained where he can not influence and for sure wasn't prior to 70AD. In Revelation 1:7 John writes: "“Behold He cometh in the clouds and every eye shall see Him. And they also who pierced Him: and all the kindreds of the earth shall wail because of him." If people think that has already happened they had better show the historical proof.