With the struggle the Dolphins have had at offensive line, particularly at tackle and even more specifically at right tackle, let's take a look at what is and what could have been at the position.
Jonathan Martin is currently ranked 40th overall at the tackle position, 21st as a left tackle(38th in pass blocking, 54th in run blocking).
Other options that were available at left tackle:
Brandon Albert is ranked 8th overall (8th in pass blocking, 18th in run blocking).
Jake Long is ranked 17th overall (36th in pass blocking, 10th in run blocking).
Lane Johnson is ranked 31st overall playing as a right tackle (56th in pass blocking, 1st in run blocking).
Bryant McKinnie is ranked 56th overall (43rd in pass blocking, 64th in run blocking).
Summary - The Dolphins would have been better off at left tackle if they had resigned Jake Long or traded for Brandon Albert. Albert is performing at a very high level in both pass and run blocking, while Long is a much better run blocker than Martin, although they are almost on par as pass blockers.
That being said, Martin is a less expensive option and is still developing. He has shown significant improvement from last season, when he was rated way at the bottom of the left.
While Lane Johnson has shown to be a terrific run blocker, his pass blocking is leaving a lot to be desired, especially since he is at right tackle.
Bryant McKinnie would have been a clear downgrade from Jonathan Martin.
Martin has to improve his run blocking significantly and brush up on a few things in pass blocking.
Tyson Clabo had ranked high consistently for the past couple of years while playing right tackle for Atlanta. But he currently ranks 60th overall, 29th as a right tackle (54th as a pass blocker, 57th as a run blocker).
Other options that were available at right tackle:
Sebastian Vollmer is ranked 3rd overall (5th in pass blocking, 18th in run blocking).
Lane Johnson is ranked 31st overall (56th in pass blocking, 1st in run blocking).
Justin Pugh is ranked 33rd overall (29th in pass blocking, 50th in run blocking).
D.J. Fluker is ranked 41st overall (18th in pass blocking, 59th in run blocking).
Eric Winston is ranked 64th overall (66th in pass blocking, 26th in run blocking).
Summary - Sebastian Vollmer would have been a clear upgrade at the right tackle position, or the Dolphins could have opted to go young at the position with Lane Johnson, Justin Pugh or D.J. Fluker and still gotten better overall play than Tyson Clabo (minus Lane Johnson's pass protection or DJ Fluker's run blocking).
Eric Winston, who many wanted, is actually worse at pass protection than Clabo has been, although he is significantly better at run blocking.
I'll point out again that as recently as last season, Tyson Clabo was ranked 14th overall, 2nd overall in 2011, 10th overall in 2010, 20th overall in 2009 and 16th overall in 2008.
So there is a pattern of consistency from Clabo over at least a 5 year period. I'm holding out hope that he rounds into form.
There were definitely better options at tackle for the Dolphins, based on 2 games worth of performance, but those options would have cost more money and/or draft picks.
That being said, with Ryan Tannehill nursing an injured shoulder, it may have been worth the investment...