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Superman creates a huge explosion under the influence of red kryptinite.
John: Let's get out of here before the Blur (Superman) decides to light this
place up like a Christmas tree.
Lois: The Blur did this to you?
John: Yeah, I don't know how he found me.
Lois: You know, maybe he was following
a well-meaning source
. (Someone tipped off him to destroy the place?) And you did kind of go
"phantom of the boiler room" last time you entered stage right.
Got caught in the fire
when he entered the room?
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following a well-meaning source. (Someone tipped off him to destroy the place?)

The source (person) probably didn't know that Superman was evil at the time. Thought he was helping Superman find his friend...

And you did kind of go "phantom of the boiler room" last time you entered stage right. Got caught in the fire when he entered the room?

Reference to Phantom of the Opera. Not sure exactly what this means...the phantom haunted the operahouse and wreaked havoc on his love's rivals.
Comments  
Thanks, Vorpar!