No, Richard he was not a spirit. He says so himself. "Look at MY hands and feet. It is I MYSELF. Touch ME and SEE." You can't do that to a spirit. That what he said. Go back and read it.
Since his body did not decay, it would have still been in the tomb 3 days later. Yet Jesus was seen and touched outside the tomb. If it were not his own original body that he showed, what became of it? What is the point of having a non decaying body intended to be discarded?
The physical body that Jesus showed as himself, was a physical body that wasn't a spirit, and it did have flesh and bones. But this was a simulated body of flesh, that Jesus materialised to become visible for his disciples.
Jesus could never reclaim his real body of flesh, as he had offered his life as a human, his blood and his fleshly body as the sacrifice to redeem sinful mankind.
To reclaim his corpse again, would invalidate his purchase price that he paid for mankind.
Hebrews 9:16-17 New American Standard Bible (NASB)
16 For where a covenant is, there must of necessity be the death of the one who made it. 17 For a covenant is valid only when men are dead, for it is never in force while the one who made it lives.
Jesus had to give up his life as a human forever to keep this covenant in force. If he were to do as you say, to take up life again in his human body, then the covenant is no longer in force.
Hebrews 5:7, speaks of the days of Jesus' flesh in the past tense, showing that as he was dying and crying out with tears, this marked the end of Jesus being in the flesh.
In the days of His flesh, He offered up both prayers and supplications with loud crying and tears to the One able to save Him from death, and He was heard because of His piety.
1 Peter 3:18, shows that he was made alive again after three days, but now in the spirit.
"For Christ also died for sins once for all, the just for the unjust, so that He might bring us to God, having been put to death in the flesh, but made alive in the spirit;"