Answer

Strict answer: No. Having or imagining a vaikriya sharir does not mean a human can freely go here and there in Devlok.

Explanation

In Jain Dharma:

• Vaikriya sharir is mainly associated with devas and some other beings according to their own birth and karmic state.
• A human being does not normally have a vaikriya sharir.
• Devlok is not a place reached by ordinary physical travel. It is a realm where devas are जन्मित through their karmas.

So the strict Jain understanding is:

• Humans cannot simply enter Devlok by body power
• Vaikriya sharir does not give free access to Devlok
• Residence in Devlok depends on karmic birth, not willpower

Spiritual Understanding

Jain Dharma teaches that true progress is not about supernatural travel, but about:

• purity of soul
• control over passions
• reduction of karma
• right faith, right knowledge, and right conduct

Even extraordinary powers are not the goal. Liberation is the goal.

Takeaway

Strictest answer: No. Vaikriya sharir does not mean a human can freely move in Devlok.