Wells Fargo & Co. is plunging back into the commercial mortgage-backed securities market that helped fell Wachovia Corp., the bank it bought in 2008 for $12.7 billion. Wells Fargo added more than 20 bankers and support personnel during the past three months to increase loan originations and bundle them into CMBS, said Ed Blakey, who’s leading the effort with John Shrewsberry. Wells Fargo anticipates selling bonds, though the executives declined in an Aug. 16 interview to give a date. “We believe there is going to be a resurgence of CMBS, and we are investing in anticipation of it,” said Blakey, head of commercial-mortgage lending and servicing. “Our pipeline is growing and we intend to be a leader of this market.”